Re: [Pharo-dev] How production ready is Pharo on SQLServer?
Sebastian, that doesn't look like the correct one DBXTalk is on smalltalkhub https://ci.inria.fr/dbxtalk/ Stephan
[Pharo-dev] Pharo books - association
Hi guys I wanted to let you know that each time you buy a pharo book the small benefit is given to the association. Stef
Re: [Pharo-dev] How production ready is Pharo on SQLServer?
Here is how to load and install DBXTalk in Pharo 3.0: Gofer new smalltalkhubUser: 'DBXTalk' project: 'DBXTalkDriver'; package: 'ConfigurationOfOpenDBXDriver'; load. #ConfigurationOfOpenDBXDriver asClass loadBleedingEdge. #NBPharoOpenDBX asClass installAsCurrent. Cheers, Doru On Fri, Sep 19, 2014 at 8:45 AM, Esteban Lorenzano esteba...@gmail.com wrote: yeah… I told you that dbxtalk site information is outdated (and never find the time to update) you need to look here: http://smalltalkhub.com/#!/~DBXTalk/Configurations (or in the configuration browser) cheers, Esteban On 19 Sep 2014, at 08:00, Stephan Eggermont step...@stack.nl wrote: Sebastian, that doesn't look like the correct one DBXTalk is on smalltalkhub https://ci.inria.fr/dbxtalk/ Stephan -- www.tudorgirba.com Every thing has its own flow
[Pharo-dev] [Review: 11536] Add Stream printString:
This issue was more of a discussion between Camillo and Sven. They never
reached a conclusion, so please take a look. I’ve compiled the transcript below.
The issue isn’t easy to solve and maybe we can just close it as “not important”.
https://pharo.fogbugz.com/f/cases/11536/Add-Stream-printString
Camillo:
This method should be added to avoid many asString sends.
Example:
stream nextPutAll: #('ABC') asString could be written as stream printString:
#('ABC').
This is a common extension of the following pattern:
stream nextPutAll: #('ABC') printString could be written as stream print:
#('ABC').
Sven:
And what about #print: as implemented by Transcripts and SocketStreams ?
It is shorter.
Feels more familiar.
Camillo:
#print: is already implement and doesn't solve the stream nextPutAll: foo
asString case. Since you cannot simply write stream print: foo, since you get
quotes added for Strings.
Ok, I admit that with decent design you can avoid this, since it should almost
never happen that you have a String or a non string object in the same
variable, right?
Sven:
Yeah, that String issue is a bit annoying sometimes.
Indeed there is Stream#print: already.
But look:
ThreadSafeTranscript#print: anObject
self nextPutAll: anObject asString
how about that ?
There is also # whose implementation is even weirder, but it is handy.
The question remain: when do you want to mix Strings and other objects as
arguments ?
Camillo:
- # is basically a lazy combination of #nextPut: and #nextPutAll:
- #print: should call #printOn: on the initial argument, which for strings
defaults to storeOn: which I think is wrong, but I would hardly stand a chance
changing that :P
So my global goal here is to avoid any kind of asString sends while pushing
stuff on a stream. Sadly this happens more often than I thought :/
Sven:
Maybe this discussion should happen on the mailing list ?
Changing String#printOn: might be hard, but # is much more recent, no ?
Could it not be changed to do what you want ? Like
Streamm anObject
self nextPutAll: anObject asString
Another point is that #asString is not so efficient, since it creates throwaway
Strings.
Re: [Pharo-dev] Versioner does not work on Pharo 4
Hi Kilon, You error is strange. I use Versionner on Pharo 4.0 without any problem. If I take a closer look at the stack trace, the error comes from the MetacelloToolBox when Versionner asks for configuration classes. What is really strange is that after this message sent, the stack shows the execution goes through EphPyParser class(Object)mustBeBoolean. I don't get why. I tried in a fresh Pharo image to load Ephestos, create a config for it, and got no problem. Can you try to reproduce and give more information about the environment, what you did? Thanks, Christophe. Le 17 sept. 2014 à 16:57, kilon alios a écrit : So I tried today to open versioner to make a configuration for Ephestos and i got this error RBMethodNode(Object)doesNotUnderstand: #asSequenceNode EphPyParser class(Object)mustBeBooleanInMagic: EphPyParser class(Object)mustBeBoolean MetacelloProjectRegistration classExecuteUnOptimizedIn: EphPyParser class(Object)mustBeBooleanInMagic: EphPyParser class(Object)mustBeBoolean [ :cl | (answer includes: cl) ifFalse: [ (([ cl isMetacelloConfig ] on: Error do: [ :ex | ex return: false ]) and: [ cl name asString beginsWith: 'ConfigurationOf' ]) ifTrue: [ answer add: cl ] ] ] in MetacelloProjectRegistration classconfigurationClasses in Block: [ :cl | ... OrderedCollectiondo: MetacelloProjectRegistration classconfigurationClasses MetacelloToolBox classconfigurationClasses MBConfigurationRootconfigurationClasses MBConfigurationRootconfigurations VersionnerSpecBrowser classimageConfigurations VersionnerSpecBrowser classopen [ VersionnerSpecBrowser open ] in VersionnerSpecBrowser classmenuCommandOn: in Block: [ VersionnerSpecBrowser open ] BlockClosurecull: [ | selArgCount | show cursor in case item opens a new MVC window (selArgCount := selector numArgs) = 0 ifTrue: [ target perform: selector ] ifFalse: [ selArgCount = arguments size ifTrue: [ target perform: selector withArguments: arguments ] ifFalse: [ target perform: selector withArguments: (arguments copyWith: evt) ] ]. self changed ] in ToggleMenuItemMorph(MenuItemMorph)invokeWithEvent: in Block: [ ... BlockClosureensure: CursorWithMask(Cursor)showWhile: ToggleMenuItemMorph(MenuItemMorph)invokeWithEvent: ToggleMenuItemMorph(MenuItemMorph)mouseUp: ToggleMenuItemMorph(MenuItemMorph)handleMouseUp: MouseButtonEventsentTo: ToggleMenuItemMorph(Morph)handleEvent: MorphicEventDispatcherdispatchDefault:with: MorphicEventDispatcherdispatchEvent:with: ToggleMenuItemMorph(Morph)processEvent:using: MorphicEventDispatcherdispatchDefault:with: MorphicEventDispatcherdispatchEvent:with: MenuMorph(Morph)processEvent:using: smime.p7s Description: S/MIME cryptographic signature
Re: [Pharo-dev] Versioner does not work on Pharo 4
Well to kepp you updated , because I did not bother replying to my own thread since none seemed to care or have the same issue as me. I tried on windows again same error as macos on a fresh image by the way. So I know it must not be me. But now with a latest Pharo 4 image i get no errors in both Macos and Windows, so the bug apparently was fixed. That may explain why you get no error , maybe it was a bug in a specific release. The only things I am doing with pharo is 1) use dark theme 2) use free type font Arial on windows and Monaco on macos 3) use filetree for working with a git directory. On Fri, Sep 19, 2014 at 11:20 AM, Christophe Demarey christophe.dema...@inria.fr wrote: Hi Kilon, You error is strange. I use Versionner on Pharo 4.0 without any problem. If I take a closer look at the stack trace, the error comes from the MetacelloToolBox when Versionner asks for configuration classes. What is really strange is that after this message sent, the stack shows the execution goes through EphPyParser class(Object)mustBeBoolean. I don't get why. I tried in a fresh Pharo image to load Ephestos, create a config for it, and got no problem. Can you try to reproduce and give more information about the environment, what you did? Thanks, Christophe. Le 17 sept. 2014 à 16:57, kilon alios a écrit : So I tried today to open versioner to make a configuration for Ephestos and i got this error RBMethodNode(Object)doesNotUnderstand: #asSequenceNode EphPyParser class(Object)mustBeBooleanInMagic: EphPyParser class(Object)mustBeBoolean MetacelloProjectRegistration classExecuteUnOptimizedIn: EphPyParser class(Object)mustBeBooleanInMagic: EphPyParser class(Object)mustBeBoolean [ :cl | (answer includes: cl) ifFalse: [ (([ cl isMetacelloConfig ] on: Error do: [ :ex | ex return: false ]) and: [ cl name asString beginsWith: 'ConfigurationOf' ]) ifTrue: [ answer add: cl ] ] ] in MetacelloProjectRegistration classconfigurationClasses in Block: [ :cl | ... OrderedCollectiondo: MetacelloProjectRegistration classconfigurationClasses MetacelloToolBox classconfigurationClasses MBConfigurationRootconfigurationClasses MBConfigurationRootconfigurations VersionnerSpecBrowser classimageConfigurations VersionnerSpecBrowser classopen [ VersionnerSpecBrowser open ] in VersionnerSpecBrowser classmenuCommandOn: in Block: [ VersionnerSpecBrowser open ] BlockClosurecull: [ | selArgCount | show cursor in case item opens a new MVC window (selArgCount := selector numArgs) = 0 ifTrue: [ target perform: selector ] ifFalse: [ selArgCount = arguments size ifTrue: [ target perform: selector withArguments: arguments ] ifFalse: [ target perform: selector withArguments: (arguments copyWith: evt) ] ]. self changed ] in ToggleMenuItemMorph(MenuItemMorph)invokeWithEvent: in Block: [ ... BlockClosureensure: CursorWithMask(Cursor)showWhile: ToggleMenuItemMorph(MenuItemMorph)invokeWithEvent: ToggleMenuItemMorph(MenuItemMorph)mouseUp: ToggleMenuItemMorph(MenuItemMorph)handleMouseUp: MouseButtonEventsentTo: ToggleMenuItemMorph(Morph)handleEvent: MorphicEventDispatcherdispatchDefault:with: MorphicEventDispatcherdispatchEvent:with: ToggleMenuItemMorph(Morph)processEvent:using: MorphicEventDispatcherdispatchDefault:with: MorphicEventDispatcherdispatchEvent:with: MenuMorph(Morph)processEvent:using:
[Pharo-dev] Implementing lazy loading for expandable collections
I’ve written an implementation of lazily initialized expandable collections (for OrderedCollection and subclasses only for now), inspired by Alexandre’s talk at ESUG (http://www.youtube.com/watch?v=x0YJ2dsZdKglist=UUO-vBhaKVZf0al-ISMMPvRw). The implementation is pretty much straight forward but there are a couple of culprits I want to point out in case anybody else wants to do this: - my implementation requires an extra instance variable in OrderedCollection to store the requested size. This extra instance variable will break Monticello (and possibly other tools) because Monticello uses OrderedCollections to load code and the particular way it uses them makes it impossible to change the number of instance variables on OrderedCollection. Also, all .mcz files written after the change will not be loadable by images without the new instance variable (same reason). - the above means that you have to modify the code in the image manually and save a new “base image - read only messages should obviously not initialize the array. The ‘firstIndex’ and ‘lastIndex’ variables are quite handy for that. I initialize those variables to 1 and 0 respectively which makes most things work already (e.g. #size, #isEmpty etc.). - when trying to implement the same for HashedCollection I couldn’t. The image didn’t just stop working, there was no output at all on the console, not even when using a debug VM. The problem seems to be MethodDictionary, at least that’s the only subclass of Dictionary for which adding an instance variable doesn’t work. I’ll share some memory monitoring as soon as I have something significant (only just rolled it out). Big thanks to Alex for his talk and the cool work he and his students did! Cheers, Max
Re: [Pharo-dev] Versioner does not work on Pharo 4
Le 19 sept. 2014 à 11:21, kilon alios a écrit : Well to kepp you updated , because I did not bother replying to my own thread since none seemed to care or have the same issue as me. I was out of office last days ... I tried on windows again same error as macos on a fresh image by the way. So I know it must not be me. On which image? I just tried on a fresh 3.0 image and it also works for me. The only things I am doing with pharo is 1) use dark theme 2) use free type font Arial on windows and Monaco on macos 3) use filetree for working with a git directory. Maybe a side effect. Could you give me a script to help reproducing the problem? Maybe just your startup script. Does the problem appear the first time you open Versionner? Thanks, Christophe. smime.p7s Description: S/MIME cryptographic signature
[Pharo-dev] [pharo-project/pharo-core]
Branch: refs/tags/40234 Home: https://github.com/pharo-project/pharo-core
[Pharo-dev] [pharo-project/pharo-core] a53477: 40234
Branch: refs/heads/4.0 Home: https://github.com/pharo-project/pharo-core Commit: a5347722741a52b59c77091c4af73d0799f8ed57 https://github.com/pharo-project/pharo-core/commit/a5347722741a52b59c77091c4af73d0799f8ed57 Author: Jenkins Build Server bo...@pharo-project.org Date: 2014-09-19 (Fri, 19 Sep 2014) Changed paths: A Deprecated40.package/extension/Locale/class/addLocalChangedListener_.st A Deprecated40.package/extension/Locale/class/isoLocale_.st A Deprecated40.package/extension/Locale/class/localeChanged.st A Deprecated40.package/extension/Locale/class/localeChangedListeners.st A Deprecated40.package/extension/LocaleID/class/previous.st A ScriptLoader40.package/ScriptLoader.class/instance/pharo - scripts/script234.st A ScriptLoader40.package/ScriptLoader.class/instance/pharo - updates/update40234.st M ScriptLoader40.package/ScriptLoader.class/instance/public/commentForCurrentUpdate.st A System-Localization-Tests.package/ISOLanguageDefinitionTest.class/README.md A System-Localization-Tests.package/ISOLanguageDefinitionTest.class/definition.st A System-Localization-Tests.package/ISOLanguageDefinitionTest.class/instance/tests/testISO2LanguageDefinition.st A System-Localization-Tests.package/ISOLanguageDefinitionTest.class/instance/tests/testISO3LanguageDefinition.st A System-Localization-Tests.package/LocaleAnnouncementTests.class/README.md A System-Localization-Tests.package/LocaleAnnouncementTests.class/definition.st A System-Localization-Tests.package/LocaleAnnouncementTests.class/instance/events/localeWasChanged_.st A System-Localization-Tests.package/LocaleAnnouncementTests.class/instance/private accessing/frenchLocale.st A System-Localization-Tests.package/LocaleAnnouncementTests.class/instance/running/setUp.st A System-Localization-Tests.package/LocaleAnnouncementTests.class/instance/running/tearDown.st A System-Localization-Tests.package/LocaleAnnouncementTests.class/instance/tests/testLocaleChangeAnnouncement.st A System-Localization-Tests.package/LocaleChangedTest.class/README.md A System-Localization-Tests.package/LocaleChangedTest.class/definition.st A System-Localization-Tests.package/LocaleChangedTest.class/instance/private accessing/englishLocale.st A System-Localization-Tests.package/LocaleChangedTest.class/instance/private accessing/germanLocale.st A System-Localization-Tests.package/LocaleChangedTest.class/instance/tests/testInstanceCreation.st A System-Localization-Tests.package/LocaleIDTest.class/README.md A System-Localization-Tests.package/LocaleIDTest.class/definition.st A System-Localization-Tests.package/LocaleIDTest.class/instance/tests - test data/frenchLocaleID.st A System-Localization-Tests.package/LocaleIDTest.class/instance/tests - test data/germanLocaleID.st A System-Localization-Tests.package/LocaleIDTest.class/instance/tests/testComparision.st A System-Localization-Tests.package/LocaleIDTest.class/instance/tests/testCurrent.st A System-Localization-Tests.package/LocaleIDTest.class/instance/tests/testFromISOString.st A System-Localization-Tests.package/LocaleIDTest.class/instance/tests/testFromSingleISOString.st A System-Localization-Tests.package/LocaleIDTest.class/instance/tests/testHashing.st A System-Localization-Tests.package/LocaleIDTest.class/instance/tests/testInstanceCreationWithISOLanguage.st A System-Localization-Tests.package/LocaleIDTest.class/instance/tests/testInstanceCreationWithISOLanguageAndCountry.st A System-Localization-Tests.package/LocaleIDTest.class/instance/tests/testPosixNameConversion.st A System-Localization-Tests.package/LocaleIDTest.class/instance/tests/testPrintString.st A System-Localization-Tests.package/LocaleTest.class/README.md A System-Localization-Tests.package/LocaleTest.class/definition.st A System-Localization-Tests.package/LocaleTest.class/instance/tests/testAccessLocaleID.st A System-Localization-Tests.package/LocaleTest.class/instance/tests/testCurrent.st A System-Localization-Tests.package/NaturalLanguageTranslatorTest.class/README.md A System-Localization-Tests.package/NaturalLanguageTranslatorTest.class/definition.st A System-Localization-Tests.package/NaturalLanguageTranslatorTest.class/instance/running/setUp.st A System-Localization-Tests.package/NaturalLanguageTranslatorTest.class/instance/running/tearDown.st A System-Localization-Tests.package/NaturalLanguageTranslatorTest.class/instance/tests/testRegisterCustomTranslator.st A System-Localization-Tests.package/NaturalLanguageTranslatorTest.class/instance/tests/testTranslatePureString.st A System-Localization-Tests.package/RegisterableTranslatorMock.class/README.md A System-Localization-Tests.package/RegisterableTranslatorMock.class/definition.st A
Re: [Pharo-dev] Filetree and Git and Github
On Fri, Sep 19, 2014 at 11:32 AM, kilon alios kilon.al...@gmail.com wrote: I have been told that there are some problem with gitfiletree that make it not recommended for public consumption and recommendation to newcomers. I have been using not gitfiletree but filetree alone for the past week for my project Ephestos, because I am ok commiting to git via terminal/ https://github.com/kilon/phEphestos I have to congratulate people behind filetree it has been a smooth ride so far.I had no problems with it at all and I am using git in terminal for doing all the git commits and push etc. filetree also has been very succesful at some major refactoring I have done to Ephestos, I had to change the name of an entire class and I had to change methods to other classes . Filetree did an excellent job not just with the export to st file but actually git was able to see which files were deleted and which were renamed. That meant I did not have to do any git rm . However I do need to git add every time I add a new method or filetree creates a new file. Usually that is not a problem because I can see what files are not tracked by git with git status and copy paste their paths to git add. So I will say overall my commits have been a process of saving in monticello , git add, git commit and git push which exactly the same process I have used for when I was and still coding in python. So thank you for this tool , I got fed up with the slow downs of Smalltalkhub and all its problems and it feels great to be back at using github :) I'd agree to that thing. Took me a while but now the Git based workflow just feels better. Also useful is storing snippets as gists. Git has won, let's embrace that. This doesn't mean that STH is not useful as a project repository. MCZs are still the main artifact. I will keep testing for a couple a months and then completely move to github . The only thing I noticed is that sometimes monticello slows down but that may well be a problem with Pharo 4.
Re: [Pharo-dev] How production ready is Pharo on SQLServer?
Tudor Girba-2 wrote package: 'ConfigurationOfOpenDBXDriver'; load. #ConfigurationOfOpenDBXDriver asClass loadBleedingEdge. configurationOf: 'OpenDBXDriver'; loadVersion: #bleedingEdge. :) - Cheers, Sean -- View this message in context: http://forum.world.st/How-production-ready-is-Pharo-on-SQLServer-tp4777508p4778944.html Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.
[Pharo-dev] [pharo-project/pharo-core]
Branch: refs/tags/40235 Home: https://github.com/pharo-project/pharo-core
[Pharo-dev] [pharo-project/pharo-core] 31716f: 40235
Branch: refs/heads/4.0 Home: https://github.com/pharo-project/pharo-core Commit: 31716ff672da83deb83bf7f262f0890fd0e105be https://github.com/pharo-project/pharo-core/commit/31716ff672da83deb83bf7f262f0890fd0e105be Author: Jenkins Build Server bo...@pharo-project.org Date: 2014-09-19 (Fri, 19 Sep 2014) Changed paths: R KernelTests.package/JobTest.class/instance/tests/testCurrent.st A Ring-Core-Kernel.package/RGClassDefinition.class/class/instance creation/createSharedPoolNamed_.st M Ring-Core-Kernel.package/RGClassDefinition.class/instance/shared pools/addSharedPoolNamed_.st R Ring-Core-Kernel.package/RGFactory.class/instance/factory/createClassVariableNamed_parent_.st R Ring-Core-Kernel.package/RGFactory.class/instance/factory/createPoolVariableNamed_parent_.st R Ring-Core-Kernel.package/RGFactory.class/instance/factory/createSharedPoolNamed_.st M Ring-Tests-Kernel.package/RGGlobalDefinitionTest.class/instance/testing/testPoolDefinition.st M Ring-Tests-Kernel.package/RGVariableDefinitionTest.class/instance/testing/testClassVariable.st M Ring-Tests-Kernel.package/RGVariableDefinitionTest.class/instance/testing/testPoolVariable.st A ScriptLoader40.package/ScriptLoader.class/instance/pharo - scripts/script235.st A ScriptLoader40.package/ScriptLoader.class/instance/pharo - updates/update40235.st M ScriptLoader40.package/ScriptLoader.class/instance/public/commentForCurrentUpdate.st M Spec-Tools.package/MessageBrowser.class/instance/messageList interface/open.st Log Message: --- 40235 14038 #testSendersOfAt failing when running the tests in the image https://pharo.fogbugz.com/f/cases/14038 14039 #testCurrent always fails when running all tests... https://pharo.fogbugz.com/f/cases/14039 14041 Continue cleaning Ring Factory https://pharo.fogbugz.com/f/cases/14041 http://files.pharo.org/image/40/40235.zip
Re: [Pharo-dev] Implementing lazy loading for expandable collections
On 2014-09-19 11:35, Max Leske wrote: - my implementation requires an extra instance variable in OrderedCollection to store the requested size. This extra instance variable will break Monticello (and possibly other tools) because Monticello uses OrderedCollections to load code and the particular way it uses them makes it impossible to change the number of instance variables on OrderedCollection. Also, all .mcz files written after the change will not be loadable by images without the new instance variable (same reason). I might be a bit fundamentalistic, but shouldn't this (a using class making assumptions about the objects it's using) be considered a bug by object oriented standards? Best regards Markus
Re: [Pharo-dev] Interesting Date/Time Thread on Squeak Dev
From http://forum.world.st/Next-version-of-Date-DateAndTime-and-Duration-API-updates-td4778871.html : Now in the InBox: KernelTests-cbc.278.mcz Kernel-cbc.871.mcz The tests add in test for expected Duration addition and subtraction from each other, including the new GenericMonth and GenericYear, and the very new GenericDuration. It also adds a few more tests for LeapYear tests with adding years to them. The test are still based on what it currently does, with the exceptions listed previously (I haven't really changed any to expect failures, as has been suggested - that will come shortly. For now, I want to try to cause little to no changes o expected behavior first - just new behavior for now). Kernel adds the GenericDuration, and handles adding and subtracting GenericMonth, GenericYear, and GenericDurations togeher in a rational way. This involves turning + and - in Durations into a double-dispatch so that it will work. There are no comments yet in these classes - they will be there before the weekend is over at the latest. Any comments are more than welcome. -cbc - Cheers, Sean -- View this message in context: http://forum.world.st/Interesting-Date-Time-Thread-on-Squeak-Dev-tp4778652p4778945.html Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.
Re: [Pharo-dev] Versioner does not work on Pharo 4
just for the record I have not created any kind of configuration in Ephestos. The code that you can download from Smalltalkhub or github is the only thing that lives inside the image. I use Smalltalkhub as a backup for github repo until I make sure filetree is a reliable way to work with github and pharo. I have not touche any of the internals of Pharo all my code lives inside the SThub repo. Other than the steps I described , and the code you can get from sthub I have done nothing to the pharo image. Also I forgot to say I dont mind at all late replies, I did not want to imply that I was annoyed or anything like that with people not replying. Its perfectly ok to not reply to my threads or reply days afterwards or even moths. I have in my hand scientific evidence that I am not the center of this world. Thank you Christopher and everyone who is trying to help me in each of my problems. I really appreciate it. On Fri, Sep 19, 2014 at 12:49 PM, kilon alios kilon.al...@gmail.com wrote: I dont use a startup script myself, in windows the image with problem is release 40230, i download that specific release and it works o_O , so maybe it was something I did afterall ? very strange so I attached my image folder, hope it helps you On Fri, Sep 19, 2014 at 12:39 PM, Christophe Demarey christophe.dema...@inria.fr wrote: Le 19 sept. 2014 à 11:21, kilon alios a écrit : Well to kepp you updated , because I did not bother replying to my own thread since none seemed to care or have the same issue as me. I was out of office last days ... I tried on windows again same error as macos on a fresh image by the way. So I know it must not be me. On which image? I just tried on a fresh 3.0 image and it also works for me. The only things I am doing with pharo is 1) use dark theme 2) use free type font Arial on windows and Monaco on macos 3) use filetree for working with a git directory. Maybe a side effect. Could you give me a script to help reproducing the problem? Maybe just your startup script. Does the problem appear the first time you open Versionner? Thanks, Christophe.
Re: [Pharo-dev] Implementing lazy loading for expandable collections
2014-09-19 13:55 GMT+02:00 Markus Fritsche mfrits...@reauktion.de: On 2014-09-19 11:35, Max Leske wrote: - my implementation requires an extra instance variable in OrderedCollection to store the requested size. This extra instance variable will break Monticello (and possibly other tools) because Monticello uses OrderedCollections to load code and the particular way it uses them makes it impossible to change the number of instance variables on OrderedCollection. Also, all .mcz files written after the change will not be loadable by images without the new instance variable (same reason). I might be a bit fundamentalistic, but shouldn't this (a using class making assumptions about the objects it's using) be considered a bug by object oriented standards? Best regards Markus It's not the using class per se. It's that MC is using a serialization framework sensitive to internal object representation (number/order of ivars). The question is this one: - would using FUEL would have resolved the problem or not? - wouldn't a serialization using message sends to reconstruct the objects be more robust (future proof)? Of course the later requires the maintenance of a well defined API, so the robstness is relative. But at least, it would respect the object paradigm a bit more. Nicolas
Re: [Pharo-dev] Interesting Date/Time Thread on Squeak Dev
Hi Sean, did you see issue 13229 (https://pharo.fogbugz.com/f/cases/13229/Year-arithmetic-broken)? It adds a new class AnnualDuration to allow for correct year based arithmetics. It also introduces floats for seconds (with nano seconds as base). I guess that issue and your change will conflict but as I understand it, your change probably does pretty much the same (for the year part at least)? Could you take a look? Cheers, Max On 19.09.2014, at 13:54, Sean P. DeNigris s...@clipperadams.com wrote: From http://forum.world.st/Next-version-of-Date-DateAndTime-and-Duration-API-updates-td4778871.html : Now in the InBox: KernelTests-cbc.278.mcz Kernel-cbc.871.mcz The tests add in test for expected Duration addition and subtraction from each other, including the new GenericMonth and GenericYear, and the very new GenericDuration. It also adds a few more tests for LeapYear tests with adding years to them. The test are still based on what it currently does, with the exceptions listed previously (I haven't really changed any to expect failures, as has been suggested - that will come shortly. For now, I want to try to cause little to no changes o expected behavior first - just new behavior for now). Kernel adds the GenericDuration, and handles adding and subtracting GenericMonth, GenericYear, and GenericDurations togeher in a rational way. This involves turning + and - in Durations into a double-dispatch so that it will work. There are no comments yet in these classes - they will be there before the weekend is over at the latest. Any comments are more than welcome. -cbc - Cheers, Sean -- View this message in context: http://forum.world.st/Interesting-Date-Time-Thread-on-Squeak-Dev-tp4778652p4778945.html Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.
Re: [Pharo-dev] Implementing lazy loading for expandable collections
On 19.09.2014, at 14:06, Nicolas Cellier nicolas.cellier.aka.n...@gmail.com wrote: 2014-09-19 13:55 GMT+02:00 Markus Fritsche mfrits...@reauktion.de: On 2014-09-19 11:35, Max Leske wrote: - my implementation requires an extra instance variable in OrderedCollection to store the requested size. This extra instance variable will break Monticello (and possibly other tools) because Monticello uses OrderedCollections to load code and the particular way it uses them makes it impossible to change the number of instance variables on OrderedCollection. Also, all .mcz files written after the change will not be loadable by images without the new instance variable (same reason). I might be a bit fundamentalistic, but shouldn't this (a using class making assumptions about the objects it's using) be considered a bug by object oriented standards? Best regards Markus It's not the using class per se. It's that MC is using a serialization framework sensitive to internal object representation (number/order of ivars). IIRC, MC counts the number of inst vars in the implementation that is being loaded and then assumes that the current implementation has the same number of fields. It might actually be quite easy to simply use the min of the number of instance variables and ignore the rest. However, that would not address the problem of modified variable position (which is a problem at least in theory). The question is this one: - would using FUEL would have resolved the problem or not? Partly. You could tell Fuel to migrate to the new layout dynamically which would allow reading of the old format as well as reading and writing of the new format. It wouldn’t be exactly “nice” though. - wouldn't a serialization using message sends to reconstruct the objects be more robust (future proof)? Of course the later requires the maintenance of a well defined API, so the robstness is relative. But at least, it would respect the object paradigm a bit more. Nicolas
Re: [Pharo-dev] Interesting Date/Time Thread on Squeak Dev
Max Leske wrote your change It's not mine. I just scanned the thread from Squeak Dev and was intrigued because I've run into this limitation (the tension between year/month/etc as a conceptual ideal, and those entities as a specific number of days in context) a bunch before - Cheers, Sean -- View this message in context: http://forum.world.st/Interesting-Date-Time-Thread-on-Squeak-Dev-tp4778652p4778960.html Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.
Re: [Pharo-dev] Interesting Date/Time Thread on Squeak Dev
On 19.09.2014, at 14:16, Sven Van Caekenberghe s...@stfx.eu wrote: Part of that is in https://pharo.fogbugz.com/f/cases/13229/Year-arithmetic-broken Furthermore, I am not so sure all this is a good idea, year/month durations are not constants and are dealt with differently in many context (say the financial world). January 30 + 1 month ? January 31 + 1 month ? Issue 13299 doesn’t change that (I don’t know about the other change). There is still only the Month object which knows its number of days, so a month will always be used in a defined context. Februari 29 2004 + 1 year ? This one is hard and the change in issue 13299 does indeed make the assumption that February 29 2004 + 1 year = February 28 2005. One might argue that is should be March 1. But: that is also the assumption the *current* implementation makes, so no change there. And given all sorts of cleverness, will basic math rules still work ? A +B = B + A A + B = C = C - B = A On 19 Sep 2014, at 13:54, Sean P. DeNigris s...@clipperadams.com wrote: From http://forum.world.st/Next-version-of-Date-DateAndTime-and-Duration-API-updates-td4778871.html : Now in the InBox: KernelTests-cbc.278.mcz Kernel-cbc.871.mcz The tests add in test for expected Duration addition and subtraction from each other, including the new GenericMonth and GenericYear, and the very new GenericDuration. It also adds a few more tests for LeapYear tests with adding years to them. The test are still based on what it currently does, with the exceptions listed previously (I haven't really changed any to expect failures, as has been suggested - that will come shortly. For now, I want to try to cause little to no changes o expected behavior first - just new behavior for now). Kernel adds the GenericDuration, and handles adding and subtracting GenericMonth, GenericYear, and GenericDurations togeher in a rational way. This involves turning + and - in Durations into a double-dispatch so that it will work. There are no comments yet in these classes - they will be there before the weekend is over at the latest. Any comments are more than welcome. -cbc - Cheers, Sean -- View this message in context: http://forum.world.st/Interesting-Date-Time-Thread-on-Squeak-Dev-tp4778652p4778945.html Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.
Re: [Pharo-dev] Interesting Date/Time Thread on Squeak Dev
On 19.09.2014, at 14:16, Sean P. DeNigris s...@clipperadams.com wrote: Max Leske wrote your change It's not mine. I just scanned the thread from Squeak Dev and was intrigued because I've run into this limitation (the tension between year/month/etc as a conceptual ideal, and those entities as a specific number of days in context) a bunch before Ok. Then I’ll look at it. - Cheers, Sean -- View this message in context: http://forum.world.st/Interesting-Date-Time-Thread-on-Squeak-Dev-tp4778652p4778960.html Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.
Re: [Pharo-dev] Interesting Date/Time Thread on Squeak Dev
Oops. Didn’t realize that thread was from Squeak dev. So there’s no Pharo implementation of that change for now anyway. On 19.09.2014, at 14:35, Max Leske maxle...@gmail.com wrote: On 19.09.2014, at 14:16, Sean P. DeNigris s...@clipperadams.com wrote: Max Leske wrote your change It's not mine. I just scanned the thread from Squeak Dev and was intrigued because I've run into this limitation (the tension between year/month/etc as a conceptual ideal, and those entities as a specific number of days in context) a bunch before Ok. Then I’ll look at it. - Cheers, Sean -- View this message in context: http://forum.world.st/Interesting-Date-Time-Thread-on-Squeak-Dev-tp4778652p4778960.html Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.
Re: [Pharo-dev] Interesting Date/Time Thread on Squeak Dev
Ok, so I read Chris’ e-mail and I’m intrigued. Sven, you’re still right about financial months being 30 days for instance but the thing is that the current implementation seems broken (or inconsisten at least) and doesn’t honor that case either. *Not* making the change will not help us either… So I’d say: let’s do it. If somebody objects (or proposes a change) then we can handle that but at least we can claim that we try to give the users what we preach, like writing natural language like code (e.g. “x + 1 month” which is currently not possible). That’s my view at least. Also: we’re changing so much stuff in Pharo anyway all the time, I don’t think this would hurt. Cheers, Max On 19.09.2014, at 14:37, Max Leske maxle...@gmail.com wrote: Oops. Didn’t realize that thread was from Squeak dev. So there’s no Pharo implementation of that change for now anyway. On 19.09.2014, at 14:35, Max Leske maxle...@gmail.com wrote: On 19.09.2014, at 14:16, Sean P. DeNigris s...@clipperadams.com wrote: Max Leske wrote your change It's not mine. I just scanned the thread from Squeak Dev and was intrigued because I've run into this limitation (the tension between year/month/etc as a conceptual ideal, and those entities as a specific number of days in context) a bunch before Ok. Then I’ll look at it. - Cheers, Sean -- View this message in context: http://forum.world.st/Interesting-Date-Time-Thread-on-Squeak-Dev-tp4778652p4778960.html Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.
Re: [Pharo-dev] Interesting Date/Time Thread on Squeak Dev
2014-09-19 9:16 GMT-03:00 Sven Van Caekenberghe s...@stfx.eu: Part of that is in https://pharo.fogbugz.com/f/cases/13229/Year-arithmetic-broken Furthermore, I am not so sure all this is a good idea, year/month durations are not constants and are dealt with differently in many context (say the financial world). +1 January 30 + 1 month ? January 31 + 1 month ? Februari 29 2004 + 1 year ? And given all sorts of cleverness, will basic math rules still work ? A +B = B + A A + B = C = C - B = A Pharo Date/DateAndTime are incremental[1], then all this week/month/year operations will simply add/subtract the increment from epoch. The only way to do this in a deterministic way is to have a field based Date. Regards! Esteban A. Maringolo [1] http://www.w3.org/TR/2005/NOTE-timezone-20051013/#d2e310
Re: [Pharo-dev] Interesting Date/Time Thread on Squeak Dev
Le 19 sept. 2014 à 14:59, Esteban A. Maringolo a écrit : Pharo Date/DateAndTime are incremental[1], then all this week/month/year operations will simply add/subtract the increment from epoch. The only way to do this in a deterministic way is to have a field based Date. Yes, it would be a good idea. Then, you may have today + 1 month, today + 1 financialMonth, ... smime.p7s Description: S/MIME cryptographic signature
Re: [Pharo-dev] Visualising Network Latency
Very cool. - Do you parse data from a file? If so, what format does that file need to be in? - Is the map zoomable to city level (to see connections between Bern and Zürich for instance)? Cheers, Max On 19.09.2014, at 15:23, Leonel Merino mer...@iam.unibe.ch wrote: Hi All, I have been working on a visualisation of latency on a network. I found an interesting dataset with latency information of 140 cities around the world. In the visualisation I show different metrics regarding latency such as from each city which other has the best/worst latency; cities that geographically are close but have high latency; far cities that have low latency; and average latency for each city. When visualising the worst latency for each city I found that, for this network (at least), Valencia and in a minor extent Nairobi represent the worst endpoint for connections (in terms of latency). Also in the visualisation of far cities with low latency, Newmarket in Canada and Toledo in Spain concentrate the best endpoint for connections coming from Europe and North-America respectively. Here a couple of screenshots: PastedGraphic-4.pdf PastedGraphic-5.pdf PastedGraphic-6.pdf Here there is a screencast: http://www.youtube.com/watch?v=gDQnE-5yeWI If you want to load the code: -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Gofer new smalltalkhubUser: 'merino' project: 'NetworkLatency'; package: 'ConfigurationOfNetworkLatency'; load. (ConfigurationOfNetworkLatency project version: '0.1') load. -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=--=-=-=-= To execute the visualisation: NLVisualise new open I would be glad to have your comments and suggestions. Best regards, Leonel Merino Research Assistant Software Composition Group Institute of Computer Science and Applied Mathematics University of Bern
Re: [Pharo-dev] Visualising Network Latency
Hi Max, Thanks ! The input is a CSV file which contains a grid with city names and latency. Surely you can zoom-in at city level. However, the map only contains information of the cities that come in the dataset (is not Bern). Best regards, Leonel On 19 Sep 2014, at 15:30, Max Leske maxle...@gmail.com wrote: Very cool. - Do you parse data from a file? If so, what format does that file need to be in? - Is the map zoomable to city level (to see connections between Bern and Zürich for instance)? Cheers, Max On 19.09.2014, at 15:23, Leonel Merino mer...@iam.unibe.ch wrote: Hi All, I have been working on a visualisation of latency on a network. I found an interesting dataset with latency information of 140 cities around the world. In the visualisation I show different metrics regarding latency such as from each city which other has the best/worst latency; cities that geographically are close but have high latency; far cities that have low latency; and average latency for each city. When visualising the worst latency for each city I found that, for this network (at least), Valencia and in a minor extent Nairobi represent the worst endpoint for connections (in terms of latency). Also in the visualisation of far cities with low latency, Newmarket in Canada and Toledo in Spain concentrate the best endpoint for connections coming from Europe and North-America respectively. Here a couple of screenshots: PastedGraphic-4.pdf PastedGraphic-5.pdf PastedGraphic-6.pdf Here there is a screencast: http://www.youtube.com/watch?v=gDQnE-5yeWI If you want to load the code: -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Gofer new smalltalkhubUser: 'merino' project: 'NetworkLatency'; package: 'ConfigurationOfNetworkLatency'; load. (ConfigurationOfNetworkLatency project version: '0.1') load. -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=--=-=-=-= To execute the visualisation: NLVisualise new open I would be glad to have your comments and suggestions. Best regards, Leonel Merino Research Assistant Software Composition Group Institute of Computer Science and Applied Mathematics University of Bern
Re: [Pharo-dev] The Dilemma: Building a Futuristic GUI for Ephestos
Hi Kilon, Not sure what you are trying to do. Try this: -=-=-=-=-=-=-=-=-=-=-=-= forms := Form allInstances. v := RTView new. t := 1. e := (RTBitmap new form: [ :index | forms at: index ]) elementOn: t. v add: e. v open. [ 50 timesRepeat: [ t := t + 1. e model: t. e updateShape. (Delay forMilliseconds: 500) wait. v signalUpdate ] ] fork. -=-=-=-=-=-=-=-=-=-=-=-= Cheers, Alexandre On Sep 14, 2014, at 1:22 AM, kilon alios kilon.al...@gmail.com wrote: so I tried to animate in Roassal having two different images display with a delay for few millisecond but it only displays the second image with this code form1 :=Form fromFileNamed:'/Users/kilon/Pictures/pharo.png'. form2 :=Form fromFileNamed:'/Users/kilon/Pictures/box.png'. v := RTView new. c := v canvas. s := TRBitmapShape new. s form: form1. c addShape: s. v open. (1 to: 100) do: [ :index| s form: form1. s signalUpdate . (Delay forMilliseconds: 1000 ) wait. s form: form2. s signalUpdate . (Delay forMilliseconds: 1000) wait.]. I looked into RTAnimation but dont know how to use it for this example. Any help ? Does Roassal 2 support such animations ? if I do s form: and then s signalUpdate for each form separately it works fine but inside the loops does not seem to work , I tried bigger delays with no effect. On Sun, Sep 14, 2014 at 10:57 AM, stepharo steph...@free.fr wrote: Ronie when you ready I can help writting a chapter for the nex book. Stef On 13/9/14 21:42, Ronie Salgado wrote: Hello, On 13/9/14 20:11, Enrico Schwass wrote: Hi another option could be the verse protocol. There was a plugin for Maya and Blender to do realtime rendering. Dont know if there is some automatic Swig-like wrapper for smalltalk but FFI might work. There is Wig like wrapper for Pharo done by ronie salgado. I have an adapted version of Swig for Pharo NativeBoost here: https://github.com/ronsaldo/swig Currently I am using it to generate my Bullet bindings (available here: https://github.com/ronsaldo/bullet-pharo) that can be used as an example of using Swig. I still have to improve more my Swig generator, by writing documentation and fixing some bugs. Greetings, Ronie 2014-09-13 16:11 GMT-03:00 stepharo steph...@free.fr: On 13/9/14 20:11, Enrico Schwass wrote: Hi another option could be the verse protocol. There was a plugin for Maya and Blender to do realtime rendering. Dont know if there is some automatic Swig-like wrapper for smalltalk but FFI might work. There is Wig like wrapper for Pharo done by ronie salgado. Stef http://youtu.be/c_D2YJSNj8I Almost a decade ago I did some ruby bindings by hand. It was working out of the box Bye Enno Am 13.09.2014 um 16:11 schrieb kilon alios kilon.al...@gmail.com: I am curious. You mean rendering Bitmap from blender, for later use in Pharo UI? yes exactly. Blender can render in all popular graphics files, most used are png. Animation frames can be rendered each frame in its own file. So basically its a lot like the average games out there. I will suggest bare bone Morphic mainly, then Athens when you need vectorial drawing. ok For iStoa I decided to go purely Morphic, I have a lot of bitmap. Bitmap source is SVG, then converted to PNG, overscaled for production use. Then from iStoa, depending on the application window extent, the bitmap are downscaled accordingly, I am pretty satisfied by the result. I fail to understand how your bitmap source is SVG for me bitmap is a raster graphic format svg is procedural graphic format. Two opposite things. Sure. The downpoint, you will depend on one additional layer. dependency is not an issue. Afterall the graphic files themselves will be far bigger download even more so if the GUI becomes very large. Nice. What will be the expected outcomes of such API, I am not sure to understand and I am curious. Well Blender besides creating 3d objects (which can be used as 2d objects too) it can also create 3d unrendable objects. That means that objects produce no graphics and have the role of placeholders or helpers, for example when you want an emitter of light or emitter of a physical power like gravity or wind. Those are called dummy objects and I could use them to give characteristics to the graphics , for example I could use a dummy to define the are of influence of a mouse click , or what type of event the bitmap will respond to. That means you wont have to import the graphics manually to pharo and create a separate morph for each bitmap and then set the events but rather press a button in blender and then Ephestos will import then bitmaps to pharo , set the events and create the morphs automagically. So basically you will be using Blender as a GUI designer. Use fuel to store the state of
Re: [Pharo-dev] The Dilemma: Building a Futuristic GUI for Ephestos
Well… Porting Roassal3d to Woden is almost straightforward :-) We can help on this. Effort behind Woden, Roassal, GraphET are not to simply tools. But instead producing an effective solution for a given problem. So, they will always be changing :-) Cheers, Alexandre On Sep 14, 2014, at 7:28 AM, Nicolai Hess nicolaih...@web.de wrote: Sometimes it is a bit dangerous to trust on bleeding edge pharo frameworks. I did some work based on Roassal3D just to found out there won't be any further development. The same happens with Roassal and GraphET. The same can happen with Woden too :) -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.
Re: [Pharo-dev] Interesting Date/Time Thread on Squeak Dev
On 19 Sep 2014, at 14:59, Esteban A. Maringolo emaring...@gmail.com wrote: 2014-09-19 9:16 GMT-03:00 Sven Van Caekenberghe s...@stfx.eu: Part of that is in https://pharo.fogbugz.com/f/cases/13229/Year-arithmetic-broken Furthermore, I am not so sure all this is a good idea, year/month durations are not constants and are dealt with differently in many context (say the financial world). +1 January 30 + 1 month ? January 31 + 1 month ? Februari 29 2004 + 1 year ? And given all sorts of cleverness, will basic math rules still work ? A +B = B + A A + B = C = C - B = A Pharo Date/DateAndTime are incremental[1], then all this week/month/year operations will simply add/subtract the increment from epoch. The only way to do this in a deterministic way is to have a field based Date. Saying that it is not deterministic is a bit harsh ;-) Regards! Esteban A. Maringolo [1] http://www.w3.org/TR/2005/NOTE-timezone-20051013/#d2e310 Very interesting link, really useful - Thx.
Re: [Pharo-dev] Interesting Date/Time Thread on Squeak Dev
Being consistent is of course better (note however that #month does not exist today, probably because it is hard to define). The double-dispatching is also good. But I would have to study the actual code in detail to have a better opinion. On 19 Sep 2014, at 14:48, Max Leske maxle...@gmail.com wrote: Ok, so I read Chris’ e-mail and I’m intrigued. Sven, you’re still right about financial months being 30 days for instance but the thing is that the current implementation seems broken (or inconsisten at least) and doesn’t honor that case either. *Not* making the change will not help us either… So I’d say: let’s do it. If somebody objects (or proposes a change) then we can handle that but at least we can claim that we try to give the users what we preach, like writing natural language like code (e.g. “x + 1 month” which is currently not possible). That’s my view at least. Also: we’re changing so much stuff in Pharo anyway all the time, I don’t think this would hurt. Cheers, Max On 19.09.2014, at 14:37, Max Leske maxle...@gmail.com wrote: Oops. Didn’t realize that thread was from Squeak dev. So there’s no Pharo implementation of that change for now anyway. On 19.09.2014, at 14:35, Max Leske maxle...@gmail.com wrote: On 19.09.2014, at 14:16, Sean P. DeNigris s...@clipperadams.com wrote: Max Leske wrote your change It's not mine. I just scanned the thread from Squeak Dev and was intrigued because I've run into this limitation (the tension between year/month/etc as a conceptual ideal, and those entities as a specific number of days in context) a bunch before Ok. Then I’ll look at it. - Cheers, Sean -- View this message in context: http://forum.world.st/Interesting-Date-Time-Thread-on-Squeak-Dev-tp4778652p4778960.html Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.
Re: [Pharo-dev] Visualising Network Latency
This is excellent Leonel! I’ve tried, but I could not make the visualization work. Apparently you are using a rather old version of Roassal2. I suggest you to update it to the last version of Roassal2. Cheers, Alexandre On Sep 19, 2014, at 6:48 AM, Leonel Merino mer...@iam.unibe.ch wrote: Hi Max, Thanks ! The input is a CSV file which contains a grid with city names and latency. Surely you can zoom-in at city level. However, the map only contains information of the cities that come in the dataset (is not Bern). Best regards, Leonel On 19 Sep 2014, at 15:30, Max Leske maxle...@gmail.com wrote: Very cool. - Do you parse data from a file? If so, what format does that file need to be in? - Is the map zoomable to city level (to see connections between Bern and Zürich for instance)? Cheers, Max On 19.09.2014, at 15:23, Leonel Merino mer...@iam.unibe.ch wrote: Hi All, I have been working on a visualisation of latency on a network. I found an interesting dataset with latency information of 140 cities around the world. In the visualisation I show different metrics regarding latency such as from each city which other has the best/worst latency; cities that geographically are close but have high latency; far cities that have low latency; and average latency for each city. When visualising the worst latency for each city I found that, for this network (at least), Valencia and in a minor extent Nairobi represent the worst endpoint for connections (in terms of latency). Also in the visualisation of far cities with low latency, Newmarket in Canada and Toledo in Spain concentrate the best endpoint for connections coming from Europe and North-America respectively. Here a couple of screenshots: PastedGraphic-4.pdf PastedGraphic-5.pdf PastedGraphic-6.pdf Here there is a screencast: http://www.youtube.com/watch?v=gDQnE-5yeWI If you want to load the code: -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Gofer new smalltalkhubUser: 'merino' project: 'NetworkLatency'; package: 'ConfigurationOfNetworkLatency'; load. (ConfigurationOfNetworkLatency project version: '0.1') load. -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=--=-=-=-= To execute the visualisation: NLVisualise new open I would be glad to have your comments and suggestions. Best regards, Leonel Merino Research Assistant Software Composition Group Institute of Computer Science and Applied Mathematics University of Bern -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.
Re: [Pharo-dev] Interesting Date/Time Thread on Squeak Dev
2014-09-19 11:14 GMT-03:00 Sven Van Caekenberghe s...@stfx.eu: On 19 Sep 2014, at 14:59, Esteban A. Maringolo emaring...@gmail.com wrote: 2014-09-19 9:16 GMT-03:00 Sven Van Caekenberghe s...@stfx.eu: Pharo Date/DateAndTime are incremental[1], then all this week/month/year operations will simply add/subtract the increment from epoch. The only way to do this in a deterministic way is to have a field based Date. Saying that it is not deterministic is a bit harsh ;-) Sorry, it wasn't my intention. Maybe consistent was the proper word. :) [1] http://www.w3.org/TR/2005/NOTE-timezone-20051013/#d2e310 Very interesting link, really useful - Thx. At least it makes you understand some pros/cons about date implementations. After reading that I understood why Java's Calendar object is field based. Additionally I would like this: '2014/08/31 24:00' asDateAndTime - 2014/09/01 00:00 Or even better: '2014/08/31 24:00' asDateAndTime - 2014/08/31 24:00 And: '2014/08/31 24:00' asDateAndTime = '2014/09/01 00:00' asDateAndTime Regards! Esteban A. Maringolo
Re: [Pharo-dev] Interesting Date/Time Thread on Squeak Dev
On 19 Sep 2014, at 16:31, Esteban A. Maringolo emaring...@gmail.com wrote: 2014-09-19 11:14 GMT-03:00 Sven Van Caekenberghe s...@stfx.eu: On 19 Sep 2014, at 14:59, Esteban A. Maringolo emaring...@gmail.com wrote: 2014-09-19 9:16 GMT-03:00 Sven Van Caekenberghe s...@stfx.eu: Pharo Date/DateAndTime are incremental[1], then all this week/month/year operations will simply add/subtract the increment from epoch. The only way to do this in a deterministic way is to have a field based Date. Saying that it is not deterministic is a bit harsh ;-) Sorry, it wasn't my intention. Maybe consistent was the proper word. :) [1] http://www.w3.org/TR/2005/NOTE-timezone-20051013/#d2e310 Very interesting link, really useful - Thx. At least it makes you understand some pros/cons about date implementations. After reading that I understood why Java's Calendar object is field based. Additionally I would like this: '2014/08/31 24:00' asDateAndTime - 2014/09/01 00:00 Or even better: '2014/08/31 24:00' asDateAndTime - 2014/08/31 24:00 And: '2014/08/31 24:00' asDateAndTime = '2014/09/01 00:00' asDateAndTime Actually, ZTimestamp fromString: '2014/08/31 24:00:00'. = '2014-09-01T00:00:00Z' (ZTimestampFormat fromString: '2001/02/03 16:05') parse: '2014/08/31 24:00'. = '2014-09-01T00:00:00Z' but that is not really by design, it just does normalisation. I am not sure what to think of that, it is certainly interesting ;-)
Re: [Pharo-dev] Visualising Network Latency
Thanks Alex ! Sure, I’ll do it. —Leonel On 19 Sep 2014, at 16:30, Alexandre Bergel alexandre.ber...@me.com wrote: This is excellent Leonel! I’ve tried, but I could not make the visualization work. Apparently you are using a rather old version of Roassal2. I suggest you to update it to the last version of Roassal2. Cheers, Alexandre On Sep 19, 2014, at 6:48 AM, Leonel Merino mer...@iam.unibe.ch wrote: Hi Max, Thanks ! The input is a CSV file which contains a grid with city names and latency. Surely you can zoom-in at city level. However, the map only contains information of the cities that come in the dataset (is not Bern). Best regards, Leonel On 19 Sep 2014, at 15:30, Max Leske maxle...@gmail.com wrote: Very cool. - Do you parse data from a file? If so, what format does that file need to be in? - Is the map zoomable to city level (to see connections between Bern and Zürich for instance)? Cheers, Max On 19.09.2014, at 15:23, Leonel Merino mer...@iam.unibe.ch wrote: Hi All, I have been working on a visualisation of latency on a network. I found an interesting dataset with latency information of 140 cities around the world. In the visualisation I show different metrics regarding latency such as from each city which other has the best/worst latency; cities that geographically are close but have high latency; far cities that have low latency; and average latency for each city. When visualising the worst latency for each city I found that, for this network (at least), Valencia and in a minor extent Nairobi represent the worst endpoint for connections (in terms of latency). Also in the visualisation of far cities with low latency, Newmarket in Canada and Toledo in Spain concentrate the best endpoint for connections coming from Europe and North-America respectively. Here a couple of screenshots: PastedGraphic-4.pdf PastedGraphic-5.pdf PastedGraphic-6.pdf Here there is a screencast: http://www.youtube.com/watch?v=gDQnE-5yeWI If you want to load the code: -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Gofer new smalltalkhubUser: 'merino' project: 'NetworkLatency'; package: 'ConfigurationOfNetworkLatency'; load. (ConfigurationOfNetworkLatency project version: '0.1') load. -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=--=-=-=-= To execute the visualisation: NLVisualise new open I would be glad to have your comments and suggestions. Best regards, Leonel Merino Research Assistant Software Composition Group Institute of Computer Science and Applied Mathematics University of Bern -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.
Re: [Pharo-dev] Interesting Date/Time Thread on Squeak Dev
2014-09-19 11:41 GMT-03:00 Sven Van Caekenberghe s...@stfx.eu: [1] http://www.w3.org/TR/2005/NOTE-timezone-20051013/#d2e310 Very interesting link, really useful - Thx. At least it makes you understand some pros/cons about date implementations. After reading that I understood why Java's Calendar object is field based. Additionally I would like this: '2014/08/31 24:00' asDateAndTime - 2014/09/01 00:00 Actually, ZTimestamp fromString: '2014/08/31 24:00:00'. = '2014-09-01T00:00:00Z' but that is not really by design, it just does normalisation. I am not sure what to think of that, it is certainly interesting ;-) Yes! I forgot to mention, but I did this test with ZTimestamp before and it gave me the expected results. I played with having ZTimestamp as the default object class for PostgresSQL's timestamp without time zone data type, but then I discarded this option. PostgreSQL also converts '2014-08-31 24:00' to '2014-09-01 00:00'. Regards! Esteban A. Maringolo
[Pharo-dev] [pharo-project/pharo-core]
Branch: refs/tags/40236 Home: https://github.com/pharo-project/pharo-core
[Pharo-dev] [pharo-project/pharo-core] 489cbe: 40236
Branch: refs/heads/4.0 Home: https://github.com/pharo-project/pharo-core Commit: 489cbebbe3d9bf20b8370adc3a1647f8e169375f https://github.com/pharo-project/pharo-core/commit/489cbebbe3d9bf20b8370adc3a1647f8e169375f Author: Jenkins Build Server bo...@pharo-project.org Date: 2014-09-19 (Fri, 19 Sep 2014) Changed paths: A ScriptLoader40.package/ScriptLoader.class/instance/pharo - scripts/script236.st A ScriptLoader40.package/ScriptLoader.class/instance/pharo - updates/update40236.st M ScriptLoader40.package/ScriptLoader.class/instance/public/commentForCurrentUpdate.st M Traits.package/TClass.class/instance/compiling/compileAll.st Log Message: --- 40236 14037 #recompile does not recompile the classTrait https://pharo.fogbugz.com/f/cases/14037 http://files.pharo.org/image/40/40236.zip
Re: [Pharo-dev] Visualising Network Latency
On 19.09.2014 15:23, Leonel Merino wrote: If you want to load the code: -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Gofer new smalltalkhubUser: 'merino' project: 'NetworkLatency'; package: 'ConfigurationOfNetworkLatency'; load. (ConfigurationOfNetworkLatency project version: '0.1') load. -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=--=-=-=-= To execute the visualisation: NLVisualise new open What are the prerequisites? I tried to load it in Pharo-3.0 (with latest updates) and it was missing Trachel. So I updated Roassal2 to the latest version and now I get a MNU: MessageNotUnderstood: RTMapBuildermapPing: Kind regards, Markus
Re: [Pharo-dev] Interesting Date/Time Thread on Squeak Dev
On 19/09/2014 13:48, Max Leske wrote: Ok, so I read Chris’ e-mail and I’m intrigued. Sven, you’re still right about financial months being 30 days for instance but the thing is that the current implementation seems broken (or inconsisten at least) and doesn’t honor that case either. *Not* making the change will not help us either… So I’d say: let’s do it. If somebody objects (or proposes a change) then we can handle that but at least we can claim that we try to give the users what we preach, like writing natural language like code (e.g. “x + 1 month” which is currently not possible). That’s my view at least. Also: we’re changing so much stuff in Pharo anyway all the time, I don’t think this would hurt. That comment re 30 day months in financial is not totally correct. A common reason for calculating days in a financial calculation is for interest calculation and then you don't just need a number for the day difference but also for the number of days in a year. When I did this I think I had to support many ways of calculating the fraction of a year that was the difference between two dates depending on the interest basis (ie the contract terms) , Wikipedia gives 11 http://en.wikipedia.org/wiki/Day_count_convention So I think that adding a financial number of days into a basic date object does not make sense as it will not be correct in many cases. The best way I have seen is to pass a daycount basis strategy class into the calculation and that strategy object does the calculation. -- Mark
[Pharo-dev] [pharo-project/pharo-core]
Branch: refs/tags/40237 Home: https://github.com/pharo-project/pharo-core
[Pharo-dev] [pharo-project/pharo-core] 9e6619: 40237
Branch: refs/heads/4.0 Home: https://github.com/pharo-project/pharo-core Commit: 9e661910bcd2381958d313ad66631dc0a8cb7d07 https://github.com/pharo-project/pharo-core/commit/9e661910bcd2381958d313ad66631dc0a8cb7d07 Author: Jenkins Build Server bo...@pharo-project.org Date: 2014-09-19 (Fri, 19 Sep 2014) Changed paths: M Morphic-Widgets-Pluggable.package/PluggableTabButtonMorph.class/class/instance creation/on_label_.st A ScriptLoader40.package/ScriptLoader.class/instance/pharo - scripts/script237.st A ScriptLoader40.package/ScriptLoader.class/instance/pharo - updates/update40237.st M ScriptLoader40.package/ScriptLoader.class/instance/public/commentForCurrentUpdate.st Log Message: --- 40237 14043 TabContainerMorph example gives DNU #instance https://pharo.fogbugz.com/f/cases/14043 http://files.pharo.org/image/40/40237.zip
Re: [Pharo-dev] AppeX
This is not yet possible. I would hope we get this to work within the context of TxText. Igor got nearly embedded morphs to react to event: we embedded a simpleButtonMorph in TxText and we can click on it, delete it... Now there are some problems with positionning but it should be fixed soon. We are looking for scenario to work with txText to check the api - igor wants to have handling event (to support smart sugs, click on a text to jump...) - syntax highlithing - replacing existing editor? Stef
Re: [Pharo-dev] AppeX
As you could see in the Pillar highlighting support, Rubric can now handle any syntax highlighting in a rather straightforward way. You can also easily embed this in a Glamour browser. I'll have a look. I find that PluggableTextMorph automatic behavior (smart characters, styling) is very nice when doing Smalltalk code, but a pain in anything else. I'd like to see that Smalltalk-customized code be refactored elsewhere than in the editor. What I'd like to see is the ability to customize the behavior for islands of text inside a text (recursively of course :)). This is not yet possible. I would hope we get this to work within the context of TxText. I was thinking of having a look at TxText ;) Please Igor added the possibility to have span different attributes (like changing mouse cursor) I noticed that I have already started to reimplement part of the StringHolder / PluggableTextMorph logic outside it (via menu command objects / keymapping shortcuts instead of using the hardcoded versions inside the Morph or Model object) and I wanted to see if this was already done (or prepared for) in TxText. I think that, even in the context of the current TextEditor, I could customize based on islands based on what I already have. But I have to spend some time on it. I'm accustomed to the smart suggestion stuff as I implemented it, makes it very easy to drill down in code... What I use a lot: Right mouse button on a global, select 'Browse' : inspect the class variable or open a browser on the class (depending on what it is). Also valid in a class #subclass: display in the browser, to browse the super class. Implementors / sendors of / accesses to instance var under right mouse button: open a full browser showing all the resulting methods (and not a message list :( ). Also works in the string containing instance variable names in a class definition pane. Double click on a package / class - open a browser scoped to that package / class (where all search operations are limited to that scope). Ctrl+F - open the finder toolbar on top of the browser, with reduced gui (no package choice) : result of the finder will appear in a new browser, and finder is scoped by the initial browser scope. So, when I end up in Nautilus, I just find myself very clumsy looking around (which is not good for my self-esteem ;) ) Not forgetting the fact that opening a Nautilus browser takes a lot longer. In Moose also, GTInspector is slow. Take it as a different experience on the GUI side; I know I invest a lot in the motor skill part of the GUI, and this has an effect when I switch platform. Thierry
Re: [Pharo-dev] AppeX
Take it as a different experience on the GUI side; I know I invest a lot in the motor skill part of the GUI, and this has an effect when I switch platform. It seems to me that you are not comparing the Moose image with the Pharo image, right? What are you comparing with? Can I look at these changes? Simply AltBrowser loaded. There isn't much changes overall: AltBrowser is a bit larger than the old system browser and a lot smaller than Nautilus while providing the system browser, the message list and the finder. It is certainly the proof Pharo provides a good infrastructure for IDE development and experimentation :) :) I encourage people to build the next generation that will make us switch :)
Re: [Pharo-dev] AppeX
2014-09-19 20:32 GMT+02:00 stepharo steph...@free.fr: This is not yet possible. I would hope we get this to work within the context of TxText. Igor got nearly embedded morphs to react to event: we embedded a simpleButtonMorph in TxText and we can click on it, delete it... Now there are some problems with positionning but it should be fixed soon. Cool. I did exactly that in VisualWorks when I was a student, and, when you get it to work, it is really great! We are looking for scenario to work with txText to check the api - igor wants to have handling event (to support smart sugs, click on a text to jump...) - syntax highlithing - replacing existing editor? I'll have a look. Thierry Stef
Re: [Pharo-dev] How production ready is Pharo on SQLServer?
On Sep 19, 2014, at 8:05 AM, Torsten Bergmann asta...@gmx.de wrote: In the end I used ODBC package as it is easy to load from the config browser and one only has to setup an ODBC name After installing all and getting things sorted, it rejects my connection. Triplechecked, network settings, server and client with tcp enabled, everything but can’t connect. So I guess is time to try ODBC. but odbc has no host:port, what should I do about connection settings? I how do I make a DBXConnection based in an odbc one? thanks! sebastian o/ blog: http://sebastianconcept.com LinkedIn: http://www.linkedin.com/in/sebastiansastre github: https://github.com/sebastianconcept
Re: [Pharo-dev] Implementing lazy loading for expandable collections
max why not subclassing OrderedCollections? I’ve written an implementation of lazily initialized expandable collections (for OrderedCollection and subclasses only for now), inspired by Alexandre’s talk at ESUG (http://www.youtube.com/watch?v=x0YJ2dsZdKglist=UUO-vBhaKVZf0al-ISMMPvRw). The implementation is pretty much straight forward you initialize to nil first? but there are a couple of culprits I want to point out in case anybody else wants to do this: - my implementation requires an extra instance variable in OrderedCollection to store the requested size. This extra instance variable will break Monticello (and possibly other tools) because Monticello uses OrderedCollections to load code and the particular way it uses them makes it impossible to change the number of instance variables on OrderedCollection. Also, all .mcz files written after the change will not be loadable by images without the new instance variable (same reason). - the above means that you have to modify the code in the image manually and save a new “base image - read only messages should obviously not initialize the array. The ‘firstIndex’ and ‘lastIndex’ variables are quite handy for that. I initialize those variables to 1 and 0 respectively which makes most things work already (e.g. #size, #isEmpty etc.). - when trying to implement the same for HashedCollection I couldn’t. The image didn’t just stop working, there was no output at all on the console, not even when using a debug VM. The problem seems to be MethodDictionary, at least that’s the only subclass of Dictionary for which adding an instance variable doesn’t work. I’ll share some memory monitoring as soon as I have something significant (only just rolled it out). Big thanks to Alex for his talk and the cool work he and his students did! Cheers, Max
Re: [Pharo-dev] Implementing lazy loading for expandable collections
Keep in mind that Monticello is portable to other dialects and changing the internal representation will break Monticello for other platforms ... FWIW, the implemenation of OrderedCollection in GemStone is very different than in Pharo or Squeak and it was possible for me to fudge the serializer to do the right thing for Monticello (which was serialize the OrderedCollections the way Pharo/Squeakl expected)... A similar thing could be done for Pharo if you wanted to change the shape of OrderedCollection... Dale On Fri, Sep 19, 2014 at 5:06 AM, Nicolas Cellier nicolas.cellier.aka.n...@gmail.com wrote: 2014-09-19 13:55 GMT+02:00 Markus Fritsche mfrits...@reauktion.de: On 2014-09-19 11:35, Max Leske wrote: - my implementation requires an extra instance variable in OrderedCollection to store the requested size. This extra instance variable will break Monticello (and possibly other tools) because Monticello uses OrderedCollections to load code and the particular way it uses them makes it impossible to change the number of instance variables on OrderedCollection. Also, all .mcz files written after the change will not be loadable by images without the new instance variable (same reason). I might be a bit fundamentalistic, but shouldn't this (a using class making assumptions about the objects it's using) be considered a bug by object oriented standards? Best regards Markus It's not the using class per se. It's that MC is using a serialization framework sensitive to internal object representation (number/order of ivars). The question is this one: - would using FUEL would have resolved the problem or not? - wouldn't a serialization using message sends to reconstruct the objects be more robust (future proof)? Of course the later requires the maintenance of a well defined API, so the robstness is relative. But at least, it would respect the object paradigm a bit more. Nicolas
Re: [Pharo-dev] How production ready is Pharo on SQLServer?
Le 19/09/2014 13:36, Sebastian Sastre a écrit : yes if things where in markdown friendly wiki and git you'll see a pull request in half a second I'll think of something but returning to the dll issue, you mention you endd up using odbc and I see there are two backends to choose from. The odbc and the mssql, so, i'm getting this right? If I use odbc that dll is not needed? Any reason not to use odbc? from iPad Hi, libsybdb.dll is for sybase, it may have worked well with (very) old versions of sql server but is definitely not the correct way to connect to MS sql server (*plus MS has it's own version of dblib.dll). (*plus I'm not sure that deploying sybase native libs is legal). The MS recommendations for client connectivity to Sql server is not to use native libraries but instead use a standard layer. it's a long story, but to make it short odbc seems to be the best choice once again: MS preconizations: odbc, then rdo, then dao, then oledb, then ado, (and ado.net) and finally odbc again (on top of sql native client) with ado.net for dotnet. see http://msdn.microsoft.com/en-us/data/aa937732 http://msdn.microsoft.com/en-us/library/ms810810.aspx I don't know how it works with opendbx, but odbc is quite solid, and you don't have to take care of native libs deployment. IMHO a good choice Regards Alain
Re: [Pharo-dev] How production ready is Pharo on SQLServer?
Hi Sebastian, I think there are two ways for ODBCing from Pharo: 1. one is the one included in DBXTalk, I think I had this running also in the past and added the glorp adaptor for ODBC. Cant remember why I switched to 2. 2. the ODBC package (on top of FFI) that you can load from the Config browser in Pharo 3.0 This one is based on the ODBC known from Squeak (http://wiki.squeak.org/squeak/2480) Try it with the second first. You have to open the ODBC settings panel in Windows first, and then connect to the DB by creating a system wide DSN name similarto what is explained here for Oracle: http://www.rpi.edu/datawarehouse/dw-brio-oce-stu-prod.html You have to choose the correct MSSQL server driver.Then use this name forthe connection in Smalltalk. If the connection fails try with adatabase viewer tool first. In detail: 1. Use a new Pharo 3.0 as from the website first. 2. Install ODBC from the config browser (this will install requirements like FFI automatically) 3. Install OSWindows from config browser 4. Evaluate WinControlPanel showODBCSettings to open the ODBC panel 5. Click on the System DSN tab there 6. Click Add 7. Select the SQL Server driver (usually SQL Server Native Client blah), click Next 8. Enter an unused DSN name like MYAPP_DB, also enter the IP address (xxx.xxx.xxx.xxx) of the server and go Next (no need for port as SQLServer usually runs on 1433) 9. Authentication depends on installation. Usually one uses the SQL Server authentication, either with a dedicated user connection administrated in SQL Server Tools or by default theuser is something with sa (for system administrator) 10.After login you should be able to select the database and test connection right in the ODBC control panel 11. Go back to Pharo and run some query: con results Transcript open. con := ODBCConnection dsn:MY_SYSTEM_DSN_NAME user: db_user password: secretOne. results := (con query: select * from MyApp.dbo.MyTable) execute. results do:[:row Transcript show: row; cr]. con close. Try the query with a database tool first. If the query works from ST you can either use this or try your luck withDBXTalk and ODBC.Hope this helps. Bye T. Gesendet:Freitag, 19. September 2014 um 21:00 Uhr Von:Sebastian Sastre sebast...@flowingconcept.com An:Pharo Development List pharo-dev@lists.pharo.org Betreff:Re: [Pharo-dev] How production ready is Pharo on SQLServer? On Sep 19, 2014, at 8:05 AM, Torsten Bergmann asta...@gmx.de wrote: In the end I used ODBC package as it is easy to load from the config browser and one only has to setup an ODBC name After installing all and getting things sorted, it rejects my connection. Triplechecked, network settings, server and client with tcp enabled, everything but cant connect. So I guess is time to try ODBC. but odbc has no host:port, what should I do about connection settings? I how do I make a DBXConnection based in an odbc one? thanks! sebastian o/ blog:http://sebastianconcept.com LinkedIn:http://www.linkedin.com/in/sebastiansastre github:https://github.com/sebastianconcept
Re: [Pharo-dev] How production ready is Pharo on SQLServer?
Le 19/09/2014 23:36, Torsten Bergmann a écrit :
Hi Sebastian,
I think there are two ways for ODBC'ing from Pharo:
1. one is the one included in DBXTalk, I think I had this running also
in the past and added
the glorp adaptor for ODBC. Cant remember why I switched to 2.
The same for me :)
About Glorp, it is a really nice piece of code, but has some drawbacks
(like all orms): IIRC, there is a global object cache and Glorp manage
object's locking conflicts in addition to Sql locking (imho bad). ORM is
perfect for quick and simple queries but tend to write bad queries when
complex.
2. the ODBC package (on top of FFI) that you can load from the Config
browser in Pharo 3.0
This one is based on the ODBC known from Squeak
(http://wiki.squeak.org/squeak/2480)
Try it with the second first. You have to open the ODBC settings panel
in Windows first,
and then connect to the DB by creating a system wide DSN name
similar to what is explained here for Oracle:
http://www.rpi.edu/datawarehouse/dw-brio-oce-stu-prod.html
You have to choose the correct MSSQL server driver. Then use this name
for the connection in Smalltalk.
If the connection fails try with a database viewer tool first.
In detail:
1. Use a new Pharo 3.0 as from the website first.
2. Install ODBC from the config browser (this will install
requirements like FFI automatically)
3. Install OSWindows from config browser
4. Evaluate
WinControlPanel showODBCSettings
to open the ODBC panel
5. Click on the System DSN tab there
6. Click Add
7. Select the SQL Server driver (usually SQL Server Native Client
blah), click Next
8. Enter an unused DSN name like MYAPP_DB, also enter the IP
address (xxx.xxx.xxx.xxx)
of the server and go Next (no need for port as SQLServer usually
runs on 1433)
9. Authentication depends on installation. Usually one uses the SQL
Server authentication, either with
a dedicated user connection administrated in SQL Server Tools or
by default the user is something
with sa (for system administrator)
10. After login you should be able to select the database and test
connection right in the ODBC control panel
11. Go back to Pharo and run some query:
| con results |
Transcript open.
con := ODBCConnection dsn:'MY_SYSTEM_DSN_NAME' user: 'db_user' password:
'secretOne'.
results := (con query: 'select * from MyApp.dbo.MyTable') execute.
results do:[:row | Transcript show: row; cr].
con close.
Try the query with a database tool first. If the query works from ST you
can either use this or try your luck
with DBXTalk and ODBC. Hope this helps.
Bye
T.
Perfectly correct, I would also add:
1) On windows, it's simpler to connect to a server without registering a
DSN, you can specify the driver to use with odbc, it will find it in the
registry. For example, using the MS driver, you specify
Driver={SQL Server}; in the connection string (don't remember for oracle
but it can work the same way), with other attributes like server name,
instance name (if any) ,user , password and so on. You can take a look
in the registry to find installed drivers on your pc.
There is a class method on ODBCConnection that do the job:
toSqlServer:database:
And you can define your own if you need. Example:
ODBCConnection toSqlServer: 'MyServer\MyInstance'
database: 'AdventureWorks'
applicationId: 'MyApp'
workstationId: 'LOCALST'
user: 'MyUser' password: 'MyPassord'
Using sa in an application is considered bad practice : a huge security
breach and dangerous for your sql server.
2) On windows, you don't need to specify the IP address, the network
resolution will find it for you. If you use tcp sockets, the sql browser
service has to be started, it will handle port resolution for you, you
just specify the server and instance name (if any).
3) to use windows authentication, you don't specify user and password
but have to add a SSPI=true attribute (not sure, you should rtfm...
al...zheimer?).
Your windows user is already defined as a sql login, but you have to map
it to a windows user in your database and the sql server have to accept
sql and windows authentication.
4) For production system, you *may* experience severe locking problems,
because the Pharo vm is single threaded. That is the only big problem
actually. you may also lock yourself between to connections (not a sql
deadlock, we could call it a vm deadlock ...).
Apart of the last one, odbc/ffi works like a charm and is very fast.
HTH
Alain
Re: [Pharo-dev] Parsing Pharo syntax to C/C++
Le 15/09/2014 14:21, kilon alios a écrit : thanks I am looking at it is this relevant to pharo ? -- http://en.wikipedia.org/wiki/Visitor_pattern Hi, Of course, the only difference between what you will find in java,dotNet,c++ examples and Smalltalk is that the latter does not support method signature because of it's typeless feature and you will have to define different methods. The smalltalk equivalent of (java code) void visit(Wheel wheel); void visit(Engine engine); void visit(Body body); void visit(Car car); would be the following methods: visitWheel: aWhell visitEngine: anEngine visitBody: aBody visitCar: aCar A small disadvantage, but everything has a price ... :) If you are interested in object patterns, you should buy the GOF book http://en.wikipedia.org/wiki/Design_Patterns It's a must have and it's smalltalk companion too http://www.amazon.fr/The-Design-Patterns-Smalltalk-Companion/dp/0201184621 see chapters here: http://stephane.ducasse.free.fr/FreeBooks/SmalltalkDesignPatternCompanion/ Regards, Alain
Re: [Pharo-dev] [Review: 11536] Add Stream printString:
On Fri, Sep 19, 2014 at 1:19 AM, Max Leske maxle...@gmail.com wrote:
This issue was more of a discussion between Camillo and Sven. They never
reached a conclusion, so please take a look. I’ve compiled the transcript
below.
The issue isn’t easy to solve and maybe we can just close it as “not
important”.
+1. But isn't the selector printString: broken? Shouldn't it be
printAsString: ?
https://pharo.fogbugz.com/f/cases/11536/Add-Stream-printString
Camillo:
This method should be added to avoid many asString sends.
Example:
stream nextPutAll: #('ABC') asString could be written as stream
printString: #('ABC').
This is a common extension of the following pattern:
stream nextPutAll: #('ABC') printString could be written as stream print:
#('ABC').
Sven:
And what about #print: as implemented by Transcripts and SocketStreams ?
It is shorter.
Feels more familiar.
Camillo:
#print: is already implement and doesn't solve the stream nextPutAll: foo
asString case. Since you cannot simply write stream print: foo, since you
get quotes added for Strings.
Ok, I admit that with decent design you can avoid this, since it should
almost never happen that you have a String or a non string object in the
same variable, right?
Sven:
Yeah, that String issue is a bit annoying sometimes.
Indeed there is Stream#print: already.
But look:
ThreadSafeTranscript#print: anObject
self nextPutAll: anObject asString
how about that ?
There is also # whose implementation is even weirder, but it is handy.
The question remain: when do you want to mix Strings and other objects as
arguments ?
Camillo:
- # is basically a lazy combination of #nextPut: and #nextPutAll:
- #print: should call #printOn: on the initial argument, which for strings
defaults to storeOn: which I think is wrong, but I would hardly stand a
chance changing that :P
So my global goal here is to avoid any kind of asString sends while
pushing stuff on a stream. Sadly this happens more often than I thought :/
Sven:
Maybe this discussion should happen on the mailing list ?
Changing String#printOn: might be hard, but # is much more recent, no
? Could it not be changed to do what you want ? Like
Streamm anObject
self nextPutAll: anObject asString
Another point is that #asString is not so efficient, since it creates
throwaway Strings.
--
best,
Eliot
Re: [Pharo-dev] Parsing Pharo syntax to C/C++
Le 15/09/2014 18:23, Eliot Miranda a écrit : I find this whole discussion depressing. It seems people would rather put their energy in chasing quick fixes or other technologies instead of contributing to the work that is being done in the existing VM. People discuss using LLVM as if the code generation capabilities inside Cog were somehow poor or have no chance of competing. Spur is around twice as fast as the current memory manager, has much better support for the FFI. Clément and I, now with help from Ronie, are making excellent progress towards an adaptive optimizer/speculative inliner that will give us similar performance to V8 (the Google JavaScript VM, lead by Lars Bak, who implemented the HotSpot VM (Smalltalk and Java)) et al. We are trying to get person-power for a high-quality FFI and have a prototype for a non-blocking VM. When we succeed C won't be any better and so it won't be an interesting target. One will be able to program entirely in Smalltalk and get excellent performance. But we need effort. Collaboration. Hi Eliot, Not everybody has the necessary skills to help and contribute to your work, my assembly skills are really faraway and outdated now (... little frustration here :( ... ) but imho your work is unvaluable to pharo and smalltalk community - just to mention it, I noticed a 30 to 50% gain in a small bench I wrote for fun recently (a very dumb chess pawn moves generator) with the last Spur vm I was shocked :) 64bits + x2 perfs + non blocking (or multi threaded?) vm are giant steps forward that makes it possible for pharo smalltalk to compete with mainstream technologies Regards, Alain
Re: [Pharo-dev] Parsing Pharo syntax to C/C++
Le 20 sept. 2014 02:11, Alain Rastoul alf.mmm@gmail.com a écrit : Le 15/09/2014 18:23, Eliot Miranda a écrit : I find this whole discussion depressing. It seems people would rather put their energy in chasing quick fixes or other technologies instead of contributing to the work that is being done in the existing VM. People discuss using LLVM as if the code generation capabilities inside Cog were somehow poor or have no chance of competing. Spur is around twice as fast as the current memory manager, has much better support for the FFI. Clément and I, now with help from Ronie, are making excellent progress towards an adaptive optimizer/speculative inliner that will give us similar performance to V8 (the Google JavaScript VM, lead by Lars Bak, who implemented the HotSpot VM (Smalltalk and Java)) et al. We are trying to get person-power for a high-quality FFI and have a prototype for a non-blocking VM. When we succeed C won't be any better and so it won't be an interesting target. One will be able to program entirely in Smalltalk and get excellent performance. But we need effort. Collaboration. Hi Eliot, Not everybody has the necessary skills to help and contribute to your work, my assembly skills are really faraway and outdated now (... little frustration here :( ... ) but imho your work is unvaluable to pharo and smalltalk community - just to mention it, I noticed a 30 to 50% gain in a small bench I wrote for fun recently (a very dumb chess pawn moves generator) with the last Spur vm I was shocked :) 64bits + x2 perfs + non blocking (or multi threaded?) vm are giant steps forward that makes it possible for pharo smalltalk to compete with mainstream technologies We'll prevail! What we also need to do is to showcase the Smalltalk workflow and how nice it is. We cannot gain mindshare by technical prowess only. Phil Regards, Alain
Re: [Pharo-dev] [Review: 11536] Add Stream printString:
2014-09-19 20:59 GMT-03:00 Eliot Miranda eliot.mira...@gmail.com: On Fri, Sep 19, 2014 at 1:19 AM, Max Leske maxle...@gmail.com wrote: This issue was more of a discussion between Camillo and Sven. They never reached a conclusion, so please take a look. I’ve compiled the transcript below. The issue isn’t easy to solve and maybe we can just close it as “not important”. +1. But isn't the selector printString: broken? The selector sounds broken to me too. I always bring Dolphin to the discussion, but Dolphin streams had both #print:/#display: WriteStream#print: anObject anObject printOn: aStream. WriteStream#display: anObject anObject displayOn: aStream. But those are for printing/displaying the argument on the stream, which is not exactly the same as sending #asString and then then appending the result to receiver. So Eliot's #printAsString: seems to be the most intention revealing selector for such task. Regards!
Re: [Pharo-dev] Parsing Pharo syntax to C/C++
Le 20/09/2014 02:33, p...@highoctane.be a écrit : We'll prevail! What we also need to do is to showcase the Smalltalk workflow and how nice it is. We cannot gain mindshare by technical prowess only. Phil I totally agree with you, but I think that those technical advances are vital in current technology trends (saas, cloud, server side dev) and progress in this field is important. Despite the fact I think that Smalltalk still has an advance in object oriented systems/development, and offers a different perception it is hard to get the point about object system with people who are formatted by the hype or by their experience. Discussing with collegues about some smalltalk concepts is always interesting :)
