[REBOL] Image-Lab Function Implementation
Jeff, Image-Lab function in it's current incarnation does not have the appropriate behaviour in all instances. For example consider the effects block [rotate 90] Whilst the effect works perfectly, you will see that there is a problem with the face/size, the face/size/x and face/size/y values should be swapped here so that the full image appears rotated on it's side. Is this easily fixed within the current implementation design of passing 'effects as parameters in a block? (maybe the 'effects arguments should also have a word! option.) for example image/lab/preview/bmp %ukiah.jpg %ukiah.bmp 'invert whilst this is a trivial change, what about the proper behaviour of certain effects? This is only the first anomaly I've discovered, without doing a full test of all effects options we don't know if there might be more. Maybe Implementing effects as refinements may offer the fine grained control needed to ensure proper behaviour. I hope not, because I like your design of effects being a block! (or word!), much smaller and cleaner. Your thoughts please, Mark Dickson -- To unsubscribe from this list, please send an email to [EMAIL PROTECTED] with "unsubscribe" in the subject, without the quotes.
[REBOL] Re: mimetypes, loopback, object serialistion tool: minidisk
That's great! Thank you. Now I not only have this as a tool, I have a new
example of how to write a new protocol for rebol (which I've been having
trouble figuring out)
Cal Dixon
--
From: Volker Nitsch [EMAIL PROTECTED]
Reply-To: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: [REBOL] mimetypes, loopback, object serialistion tool: minidisk
Date: Sat, 03 Mar 2001 05:06:57 GMT
REBOL [
title: "mimetypes, loopback, object serialistion tool: minidisk"
purpose: {
installs a scheme ram:// which actually works as a ramdisk.
this disk can be saved completely to a single file and restored later.
is meant to be minimal, do deleteing and such by access to 'ram/files
.
output is enbase-64 compressed.
only read/write, no open/append/close (simpler)(advanced version
available).
}
usage: {
[do %minidisk.r] read/write ram://filename stuff
[ram/save %your-file.r]
[do %yourfile.r];disk back :)
append your own startup in 'save behind 'ram/install .
}
name: "minidisk"
file: %minidisk.r
author: "volker"
]
ram: context [
header: none
save: func [file'] [
system/words/save/header file' compose [
ram: do decompress debase (enbase compress mold make self
[header:
none])
ram/install
] third load mold make header [file: file' date: now]
]
install: does [header: system/script/header net-utils/net-install
'RAM self 9900]
init: func [port spec] [
net-utils/url-parser/parse-url port spec
port/locals: to file! skip spec length? to url! "RAM://"
]
open: func [port] [
port/state/flags: port/state/flags or
system/standard/port-flags/direct
]
read: func [port data /local len] [
either port/locals [
insert data debase select files port/locals
port/locals: none
length? data
] [0]
]
write: func [port data /local found] [
either found: find files port/locals [
change next found enbase copy data
] [
repend files [port/locals enbase data]
]
length? data
]
close: func [port] []
files: copy []
]
do example: [
ram/install
? ram
write ram://write.txt "hello"
print read ram://write.txt
? ram
ram/save %minidisk1.r
print read %minidisk1.r
do %minidisk1.r
; ? ram
]
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[REBOL] CPAN for REBOL
I would like to enquire if anybody has the time to setup and run effectively a Comprehensive Archive Network simlir to PERL CPAN for REBOL scripts. The Script Library at REBOL.com is only updated infrequently and REBOL.org appears all but dead. A properly managed resource system for REBOL scripts and examples is invaluable for REBOL's credibility as a language. Lots of great script examples are posted on this list, but is anybody making a coherent and useful resource with them? If anybody want's to discuss a CPAN for REBOL please raise your voice here! PS I've also thought of a cute name that might please a certain gentleman at REBOL TEchnologies Inc. Here's the name, it's an acronym, of course! CARLS: Comprehensive Archive REBOL Language Scripts Anybody any comments? Mark Dickson -- To unsubscribe from this list, please send an email to [EMAIL PROTECTED] with "unsubscribe" in the subject, without the quotes.
[REBOL] Re: binary problem
Hi Will,
Will Arp wrote:
a: read/binary %callmov.r
== #{
23212F7573722F6C6F63616C2F62696E2F7265626F6C2F7265626F6C202D6373
0A5245424F4C205B5D0A0A613A206C6F61642025767262696E320A633A20...
same? a read/binary %callmov.r
== false
Hello 8)
Well I was expecting a true result..
Can please someone help ?
Try with 'equal? instead of 'same? :
equal? a read/binary %callmov.r
== true
'same? will return 'true only if the two arguments refer (or point) to the
same memory space.
Basically, 'same? applied on immutable values should work as you expected.
For example with an integer! (immutable):
a: 5
== 5
b: a
== 5
same? a b
== true
c: 5
== 5
same? a c
== true ; true !
equal? a c
== true
but, with a string! (mutable):
a: "foo"
== "foo"
b: a
== "foo"
same? a b
== true
c: "foo"
== "foo"
same? a c
== false; false !
equal? a c
== true
Is append a good way to join two binaries ?
Sure, it's a good way. You can also use 'join (should be a little bit faster).
HTH,
DocKimbel.
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[REBOL] Re: REBOL Zen / idioms
#03-Mar-01# Message from *[EMAIL PROTECTED]*: Hi [EMAIL PROTECTED], There's a certain zen to REBOL and it takes time to understand-- something that I am always learning. With REBOL it usually comes down to taking a function, writing it, then rewriting it a few more times, carving out the fat while expanding the capability. As a general rule most REBOL functions that are written can be reworked to accomplish more, to provide more use in the same amount of space or less. Code in the eye of the fly and seek to know the true path of the REBOL way! :-) I sense the start of a new book - Zen and the art of REBOL programming ;) Chris -- New sig in the works Explorer 2260, Designer and Coder http://www.starforge.co.uk -- Violence is the last refuge of the incompetent. -- Salvor Hardin -- To unsubscribe from this list, please send an email to [EMAIL PROTECTED] with "unsubscribe" in the subject, without the quotes.
[REBOL] BUG: parse-xml exposes words 'parent and 'paroot to global context
Hello list, I just noticed that 'parse-xml exposes the words 'parent and 'paroot to the global context. I'm not sure if this has already been addressed by someone - however, I consider this to be a bug, therefore I cc'd this mail to [EMAIL PROTECTED] What do you think? Regards, Christian Ensel -- To unsubscribe from this list, please send an email to [EMAIL PROTECTED] with "unsubscribe" in the subject, without the quotes.
[REBOL] Spreadsheet
Has anyone thought of making a spreadsheet in Rebol/View or Rebol/Link? I'd really like to combine the best parts of Star Office Spreadsheet, Microsoft Office Excel and Lotus Improv, and merge them together with a generous helping of Rebol Script. Andrew Martin ICQ: 26227169 http://members.nbci.com/AndrewMartin/ -- -- To unsubscribe from this list, please send an email to [EMAIL PROTECTED] with "unsubscribe" in the subject, without the quotes.
[REBOL] newbie parsing question
I've been wrestling unsuccessfully with the parsing dialect on the following simple(?) problem. I've got an IMG SRC="" tag, and I'd like to parse the filename in the SRC attribute. The format of the filename is : /some-path/AAA0s0.jpg or /some-path/AAA0s00.jpg where A is a character [A-Z], and 0 represents a digit. I want to grab the one or two digits following the 's'. In perl, this would be something like: $html =~ s/s([0-9]+)\.jpg/$1/ I'm having a traumatic experience mapping this to REBOL. Any suggestions? -- To unsubscribe from this list, please send an email to [EMAIL PROTECTED] with "unsubscribe" in the subject, without the quotes.
[REBOL] Re: Spreadsheet
Ursprngliche Nachricht
Am 03.03.01, 22:17:47, schrieb "Andrew Martin" [EMAIL PROTECTED] zum
Thema [REBOL] Spreadsheet:
Has anyone thought of making a spreadsheet in Rebol/View or
Rebol/Link?
I'd really like to combine the best parts of Star Office Spreadsheet,
Microsoft Office Excel and Lotus Improv, and merge them together with
a
generous helping of Rebol Script.
Andrew Martin
ICQ: 26227169 http://members.nbci.com/AndrewMartin/
--
like this? (well, more a joke :)
[REBOL [title: file: %rebsheet2.r date: 6-Nov-2000/22:12:57+1:00
autor: 'volker]
formulas: none
do rebsheet: [
file: %rebsheet2.r
as-always: 640x480
list-size: 600x380
label-size: min 640x15 list-size / 5
if not formulas [formulas: array/initial [25 5] ""
formulas/1: copy/deep [
{/do[save-me] {remove "/" = autosave (lots of!)}}
"$123" "1.5 * sheet/1/2"
{(pick pick sheet y + 0 x - 2) + (pick pick sheet y + 0 x
- 1)}
"reduce[y x]"
]
]
sheet: copy/deep formulas
clear-sheet: does [foreach y sheet [forall y [change y 0]]]
save-me: does [
save/header file compose [formulas: (reduce [formulas])
do rebsheet: (reduce [rebsheet])]
compose [title: file: (file) date: (now) autor: 'volker]
]
set-text: func [face string] [face/text: string face/line-list:
none
show face]
ed-x: ed-y: 1
myst: stylize [
sheet-label: text label-size with [y: x: none action: [
poke formulas/:ed-y ed-x copy edit/text
set-text edit copy formulas/:y/:x
ed-y: y ed-x: x show sheet-list
]]
]
view layout [size as-always
styles myst
edit: area min list-size 640x1 * 1x4 * 1x15 formulas/1/1
sheet-list: list list-size 30.30.30 [
across sheet-label sheet-label sheet-label sheet-label
sheet-label
]
supply [
y: face/y: count x: face/x: index
either all [ed-x = x ed-y = y] [face/color: 0.0.255]
[face/color: 30.30.30]
if all [1 = count 1 = index] [clear-sheet]
face/text: either count length? formulas ["-"] [
if error? try [res: do formulas/:y/:x] [res: "???"]
poke sheet/:y x :res
mold :res
]
]
]
]
]
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[REBOL] Re: newbie parsing question
a: {/some-path/AAA0s12.jpg}
== "/some-path/AAA0s12.jpg"
jpg: head reverse ".jpg"
== "gpj."
parse head reverse a [thru jpg copy b to "s" to end]
== true
b: head reverse b
== "12"
rebol-parse has no backtracking like perl, sadly.
Comming from left is difficult in this case IMO.
something like
parse tail a [reverse thru .jpg copy b to s to end]
would be nice for such cases..
Volker
Ursprngliche Nachricht
Am 03.03.01, 19:39:42, schrieb "John Sequeira" [EMAIL PROTECTED] zum
Thema [REBOL] newbie parsing question:
I've been wrestling unsuccessfully with the parsing dialect on the
following
simple(?) problem.
I've got an IMG SRC="" tag, and I'd like to parse the filename in the
SRC
attribute.
The format of the filename is : /some-path/AAA0s0.jpg or
/some-path/AAA0s00.jpg where A is a character [A-Z], and 0
represents
a digit. I want to grab the one or two digits following the 's'.
In perl, this would be something like:
$html =~ s/s([0-9]+)\.jpg/$1/
I'm having a traumatic experience mapping this to REBOL. Any
suggestions?
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[REBOL] Re: Spreadsheet
The thought occurred to me. I actually did come across a situation where we wanted to provide spreadsheet functionality but in a very constrained manner. The reason being that the users were already using spreadsheets and were very nervous about causing errors. So they wanted a custom program instead, but they needed flexibility in how to define a calculation. We never did that app, because we were going to get a "better bang for buck" by doing other things first. Anyways my thoughts about doing this with Rebol: 1) Need to build a grid based entry interface style. Once done, very useful for other Rebol applications. 2) Need to code a graph sorting algorithm that gets as input the dependencies between cell calculations. 3) Need to provide all the little user-interface niceties that people expect from spreadsheet applications. 4) Aim to keep as much power of Rebol as possible accessible to user entered parts of the spreadsheet. I think (1) is the most reusable for other applications. (2) is an interesting problem to solve. (3) may actually be the most amount of work in the project - users expect a lot! but (4) is a good justification for a Rebol powered spreadsheet - Rebol programming can be made visual... Brett. - Original Message - From: "Andrew Martin" [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Sunday, March 04, 2001 8:17 AM Subject: [REBOL] Spreadsheet Has anyone thought of making a spreadsheet in Rebol/View or Rebol/Link? I'd really like to combine the best parts of Star Office Spreadsheet, Microsoft Office Excel and Lotus Improv, and merge them together with a generous helping of Rebol Script. Andrew Martin ICQ: 26227169 http://members.nbci.com/AndrewMartin/ -- -- To unsubscribe from this list, please send an email to [EMAIL PROTECTED] with "unsubscribe" in the subject, without the quotes. -- To unsubscribe from this list, please send an email to [EMAIL PROTECTED] with "unsubscribe" in the subject, without the quotes.
[REBOL] Re: Spreadsheet
Well do it then!!! Who or what is stoppin you? It would be great if you could achieve something outwith REBOL? Mark Dickson -- To unsubscribe from this list, please send an email to [EMAIL PROTECTED] with "unsubscribe" in the subject, without the quotes.
[REBOL] Re: newbie parsing question
REBOL [ Author: "Brett Handley" Title: "Parser for special files." Comment: "Example of parsing for John Sequeira" ] ctx-special-file-parser: context [ desired-number: none ; Will be set by the parser. a-char: charset [#"A" - #"Z" #"a" - #"z"] ; Parse rule to match characters. a-digit: charset [#"0" - #"9"] ; Parse rule to match digits. ; Parse rule to match the filename structure. ; Will set the field desired-number file-name-structure: [ (desired-number: none) some a-char some a-digit #"s" copy desired-number some a-digit to end ] set 'print-special-file-number func [ full-file-path [file!] ][ either parse second split-path full-file-path file-name-structure [ print desired-number ][print "parse failed"] ] ] ; Examples print-special-file-number %/some-path/AAA0s0.jpg print-special-file-number %/some-path/Absdfpkj349874s12.jpg print-special-file-number %/some-path/As0.jpg - Original Message - From: "John Sequeira" [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Sunday, March 04, 2001 5:39 AM Subject: [REBOL] newbie parsing question I've been wrestling unsuccessfully with the parsing dialect on the following simple(?) problem. I've got an IMG SRC="" tag, and I'd like to parse the filename in the SRC attribute. The format of the filename is : /some-path/AAA0s0.jpg or /some-path/AAA0s00.jpg where A is a character [A-Z], and 0 represents a digit. I want to grab the one or two digits following the 's'. In perl, this would be something like: $html =~ s/s([0-9]+)\.jpg/$1/ I'm having a traumatic experience mapping this to REBOL. Any suggestions? -- To unsubscribe from this list, please send an email to [EMAIL PROTECTED] with "unsubscribe" in the subject, without the quotes. -- To unsubscribe from this list, please send an email to [EMAIL PROTECTED] with "unsubscribe" in the subject, without the quotes.
[REBOL] re REBOL Zen / idioms
Jeff, In his book, Refactoring : Improving the Design of Existing Code http://www.bookpool.com/.x/t7itfr3lmm/sm/0201485672 , Martin Fowler help programmers tame their java code. I now consider it the most important book for learning the Java language. Your example is excellent and I hope that we will see more in the future. I have certainly learned alot about REBOL by refactoring my code many times. Next time I suspect there is a better way to do something, I will ask this list. Regards, David --- [EMAIL PROTECTED] wrote: There's a certain zen to REBOL and it takes time to understand-- something that I am always learning. REBOL has a lot of what might seem like idioms, which really are ways to do things that make life a lot easier. They stem from the craftsmanship in REBOL, the rather lengthy effort that went into its design, implementation and polish. Many problems you face in programming have a nicely crafted solution sitting inside this little binary interpreter, just waiting for you to discover it when you need it. The code that comes from REBOL should demonstrate that Zen because we all are lucky in that we can pick Carl's brains over the challenges we encounter. Also, we're lucky because we get to write REBOL code as an occupation, so we get to find all those little crafted edges inside. I've always hoped to pass on what little I have learned of the Zen of REBOL to any who would walk in that path. Here is an example of some REBOL Zen style idioms. Consider a block of similar objects: block: [make object! [name: "foo" phone: #222- ... ] ... ] Now you're writing a function and you have this block and it is really long with many of the same kinds of objects, but you need to see if there is an object which has the name field set to "Waldo" and you need to see if the waldo object's phone field is set to none, If you don't find this object you want to do somehing. If you do find waldo and waldo has a phone you want to call waldo, otherwise you want to complain that he doesn't have a phone. Some people might code it like this: find-waldo: func [block [block!] /local found waldo no-fone?][ found: false foreach obj block [ if obj/name = "waldo" [ waldo: obj found: true no-fone?: not none? obj/phone ] ] if not found [wheres-waldo?] either no-fone? [waldo-has-no-phone][call-waldo waldo/phone] ] That's a fair approach, similar to how you might tackle the problem in basic, maybe. But with REBOL you can get much more done in place. Most things return meaningful values so the left side of most functions represent an excellent place to dock another useful function, save space, save steps, and preserve the utility of results. How about this: find-waldo: func [block [block!] /local result][ if not result: foreach obj block [ if obj/name = "waldo" [break/return any [obj/phone yes]] ][wheres-waldo?] either issue? result [call-waldo result][waldo-has-no-phone] ] Okay, so we have less local variables, the code is smaller and therefore is more efficient usually (and in this case definitely). The first example trudged through the whole block before deciding the outcome, where above we BREAK/return as soon as we find waldo. The FOREACH will return the last evaluation, so if FOREACH makes it through the whole block with out ever finding waldo it will return a NONE from the last evalutation of the IF statement. We use the result of FOREACH to immediately determine if we found waldo. Now if result is not a NONE, it will be either an issue!, waldo's phone number (#222-111-), or a TRUE value (yes). The TRUE is arbitrary since we just have to return a non false / non none from BREAK/return and we only check if we have an issue which means it must be Waldo's phone number. Programmers will have different styles, but the language also has a style of its own. With REBOL it usually comes down to taking a function, writing it, then rewriting it a few more times, carving out the fat while expanding the capability. As a general rule most REBOL functions that are written can be reworked to accomplish more, to provide more use in the same amount of space or less. Code in the eye of the fly and seek to know the true path of the REBOL way! :-) -jeff -- To unsubscribe from this list, please send an email to [EMAIL PROTECTED] with "unsubscribe" in the subject, without the quotes. = please reply to: [EMAIL PROTECTED] __ Do You Yahoo!? Get email at your own domain with Yahoo! Mail.
[REBOL] Re: binary problem
Nenad,
Thanks a lot,
that works.
8)
Will
Hi Will,
Will Arp wrote:
a: read/binary %callmov.r
== #{
23212F7573722F6C6F63616C2F62696E2F7265626F6C2F7265626F6C202D6373
0A5245424F4C205B5D0A0A613A206C6F61642025767262696E320A633A20...
same? a read/binary %callmov.r
== false
Hello 8)
Well I was expecting a true result..
Can please someone help ?
Try with 'equal? instead of 'same? :
equal? a read/binary %callmov.r
== true
'same? will return 'true only if the two arguments refer (or point) to the
same memory space.
Basically, 'same? applied on immutable values should work as you expected.
For example with an integer! (immutable):
a: 5
== 5
b: a
== 5
same? a b
== true
c: 5
== 5
same? a c
== true; true !
equal? a c
== true
but, with a string! (mutable):
a: "foo"
== "foo"
b: a
== "foo"
same? a b
== true
c: "foo"
== "foo"
same? a c
== false; false !
equal? a c
== true
Is append a good way to join two binaries ?
Sure, it's a good way. You can also use 'join (should be a little bit faster).
HTH,
DocKimbel.
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[REBOL] Re: CPAN for REBOL
At 05:31 AM 3/3/01 -0500, Mark Dickson wrote: The Script Library at REBOL.com is only updated infrequently and REBOL.org appears all but dead. if you have an update that is overdue, bring it to my attention. there is a subgroup of us revising the rebol.org site to add more interactivity, etc. we are not looking for enhancement requests but we can accelerate true submissions of code. I would like to enquire if anybody has the time to setup and run effectively a Comprehensive Archive Network simlir to PERL CPAN for REBOL scripts. I have been working at this for the last year. "code only when you -have- to" Ideally, to quickly evolve a CPAN ( CrAN? CARLs? ) one would like to build on the work of others. It should be trivial (and I don't mean get the source and fork a new version) to build on someone else's work and discoveries and include that work as a foundation to your own. As well, it probably needs to be automatic to include the most recent version of some other authors code within your own creations without having to edit your mods in again. REBOL's built in capability to 'DO a URL goes a long way toward this. At the same time, it should be easy to make standalone files or files with live built-in test cases and sample values. (an unadorned 'do runs the examples) Working with the "N" (network) part of CPAN I realize that unlike java, rebol does not require all things come from the same source or domain. The author is free to trust any source they wish for 'do-ing sub-modules. I see a more distributed system is possible. I would like to assist in spreading out the central-depository approach and leave the maintainer free to make updates continuously. It would be nicer if you went right to the source (maintainer) for certain modules or foundation code. In that case rebol.org may just evolve to be a directory of resources and module start points. The current problem is that there is very little discipline used on this list that would create truly modular layers or do-callable sub-modules. We get plenty of great examples with plenty of hardcoded sample values. Not much that can stand on its own yet give remote invokers the ability to refine the hard-coded values beforehand without altering the authors intended utility. I hope to change that. The work I have been do-ing (pun) tries to showcase what is possible through modular layering. " But isn't 'do-ing over the net slow? " It could be -- that is where caching can help. That's where YOU (reader) can help. This caching issue came up when I got involved with reb-world game development. Consider: do http://www.mysite.com/reboltools/hammer.r this would load hammer.r every time across the net. What if there were an object! or function: cache/do http://www.mysite.com/~bobr/reboltools/hammer.r that would check against a local version and do that one first and only check the net for something newer, say once a week? The function would have to be able to distinguish hammer.r as different from ~jeff/somesubdir/hammer.r without requiring lots of subdirs on the local machine. Perhaps a hash of the path is used. Controlling your cache 101 We have to be able to set bounds and timing ... I propose a setup function with appropriate refinements: cache/setup/size 1024 ; nearly 10 megs cache/setup/recheck-every 24:0:0 ; once a day, default is once a week An additional requirement would be that the owner of the cache be allowed to set which dirs were used to store which domains/subpaths cache/setup/location-for "jeff/somesubd" %tmp/bargain-basement-scripts/jeff/ so that if the owner of the local machine pleased, they could remove all the files in a certain directory and only affect a specific (knowable) portion of the cache. cache/setup/save %tmp/netcache.r would save the current operating parameters (if any) out to disk. cache/setup/install %user.r would update user.r so the cache is loaded on every callup of rebol. cache/setup/improve-system-do would replace the 'do function so that all calls to 'do check the cache first if the argument is a URL and invoke the system one otherwise. This way no coding change is required for older scripts to begin working with the new caching. For other common operations: cache/clearall cache/setup/trace true cache/setup/offline true ; disable weekly recheck till back online Finally, this has to work in /core with cgi's cause that's where you get some of the most steep penalties for going back out over the net. With that spec in mind I am looking for writers. Of course the cache will itself be loaded as 'do able code! I promise great fame to the writer. If you don't have your own website to host docache.r (or whatever you choose to call it) I can find some hosting for you - very quick. A properly managed resource system for REBOL scripts and examples is
[REBOL] Re: Spreadsheet
Mark, This remark strikes me as rude. David --- [EMAIL PROTECTED] wrote: Well do it then!!! Who or what is stoppin you? It would be great if you could achieve something outwith REBOL? Mark Dickson -- To unsubscribe from this list, please send an email to [EMAIL PROTECTED] with "unsubscribe" in the subject, without the quotes. = please reply to: [EMAIL PROTECTED] __ Do You Yahoo!? Get email at your own domain with Yahoo! Mail. http://personal.mail.yahoo.com/ -- To unsubscribe from this list, please send an email to [EMAIL PROTECTED] with "unsubscribe" in the subject, without the quotes.
[REBOL] Re: Spreadsheet
Ursprngliche Nachricht Am 04.03.01, 01:24:20, schrieb "Brett Handley" [EMAIL PROTECTED] zum Thema [REBOL] Re: Spreadsheet: The thought occurred to me. I actually did come across a situation where we wanted to provide spreadsheet functionality but in a very constrained manner. The reason being that the users were already using spreadsheets and were very nervous about causing errors. So they wanted a custom program instead, but they needed flexibility in how to define a calculation. We never did that app, because we were going to get a "better bang for buck" by doing other things first. Anyways my thoughts about doing this with Rebol: 1) Need to build a grid based entry interface style. Once done, very useful for other Rebol applications. 2) Need to code a graph sorting algorithm that gets as input the dependencies between cell calculations. How much calculatios would be needed? Is a left-right/up-bottom complete calculation really to slow? Because you can enter simply rebol-code in cells, and then dependency-chcking is hard.. 3) Need to provide all the little user-interface niceties that people expect as a seldom spreadsheet-user, what do they expect? Copy/paste of areas/formulas? Or would a rebol-loop accessing cells are enough? from spreadsheet applications. 4) Aim to keep as much power of Rebol as possible accessible to user entered parts of the spreadsheet. I think (1) is the most reusable for other applications. (2) is an interesting problem to solve. (3) may actually be the most amount of work in the project - users expect a lot! but (4) is a good justification for a Rebol powered spreadsheet - Rebol programming can be made visual... Brett. Volker - Original Message - From: "Andrew Martin" [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Sunday, March 04, 2001 8:17 AM Subject: [REBOL] Spreadsheet Has anyone thought of making a spreadsheet in Rebol/View or Rebol/Link? I'd really like to combine the best parts of Star Office Spreadsheet, Microsoft Office Excel and Lotus Improv, and merge them together with a generous helping of Rebol Script. Andrew Martin ICQ: 26227169 http://members.nbci.com/AndrewMartin/ -- -- To unsubscribe from this list, please send an email to [EMAIL PROTECTED] with "unsubscribe" in the subject, without the quotes. -- To unsubscribe from this list, please send an email to [EMAIL PROTECTED] with "unsubscribe" in the subject, without the quotes. -- To unsubscribe from this list, please send an email to [EMAIL PROTECTED] with "unsubscribe" in the subject, without the quotes.
[REBOL] Re: CPAN for REBOL
What if there were an object! or function: cache/do http://www.mysite.com/~bobr/reboltools/hammer.r that would check against a local version and do that one first and only check the net for something newer, say once a week? The function would have to be able to distinguish hammer.r as different from ~jeff/somesubdir/hammer.r without requiring lots of subdirs on the local machine. Perhaps a hash of the path is used. Probably best to write the cache like this: Cache/Contents: [ "www" [ "mysite" [ "com" [ "~bobr" [ "reboltools" [ %hammer.r [ ; Script contained for http://www.mysite.com/~bobr/reboltools/hammer.r ] ] ] "~jeff" [ "somesubdir" [ %hammer.r [ ; Script for ~jeff/somesubdir/hammer.r ] ] ] ] ] ] "members" [ "nbci" [ "com" [ "AndrewMartin" [ "Rebol" [ "Scripts" [ %Index.r [ ; The contents of %Index.r. Note: don't look for this, yet... ] ] ] ] ] ] ] ] That way, if the remote file changes behaviour or requires additional files, it's really easy to adjust the cache to reflect the changes. The cache then saved to disk as a block in one file and easily loaded again, plus it's readable by humans in case of problems. Opinions? Comments? Suggestions? Andrew Martin ICQ: 26227169 http://members.nbci.com/AndrewMartin/ -- -- To unsubscribe from this list, please send an email to [EMAIL PROTECTED] with "unsubscribe" in the subject, without the quotes.
[REBOL] Re: CPAN for REBOL
Volker wrote: Headers should have some [expires: 24-Mar-2001/9:56:25-8:00] Headers should also have a redirect: Redirect: http://Users.MySite.com/MyRebolScripts/Test.r to cover the case where the code maintainer discovers a significant change in refactoring is needed, or a change of site is required. For example, my free site provider changed from Xoom to NBCi. Andrew Martin ICQ: 26227169 http://members.nbci.com/AndrewMartin/ -- -- To unsubscribe from this list, please send an email to [EMAIL PROTECTED] with "unsubscribe" in the subject, without the quotes.
