[Newbies] Tracing back objects
Hi, The following code: CompiledMethod allInstances inject: (CompiledMethod allInstances first) into: [:m :i | i size m size ifTrue: [i] ifFalse: [m]]. gives the largest method as an object. Is there an efficient way to trace back the method selector and its class without doing a brute force lookup? TIA .. Subbu ___ Beginners mailing list Beginners@lists.squeakfoundation.org http://lists.squeakfoundation.org/mailman/listinfo/beginners
[Newbies] Re: Tracing back objects
On Fri, 25 May 2007 12:18:38 +0200, subbukk wrote: Hi, The following code: CompiledMethod allInstances inject: (CompiledMethod allInstances first) into: [:m :i | i size m size ifTrue: [i] ifFalse: [m]]. gives the largest method as an object. Is there an efficient way to trace back the method selector and its class without doing a brute force lookup? On pre-traits images you'd need (aMethod who) but from 3.9 on #who is deprecated. If you're on 3.9 the comment in #who tells the fast way. /Klaus TIA .. Subbu ___ Beginners mailing list Beginners@lists.squeakfoundation.org http://lists.squeakfoundation.org/mailman/listinfo/beginners
Re: [Newbies] undefinedobject showflag
Some further experimentation : 1)Add a morph to the world. 2) open a viewer, (with the viewersInFlaps option on) 3) Open the halo for that viewer 4) Drag the viewer to the world (off the flap) 5) Select the morph again, open it's halo, (try) to open a viewer for it (with the other viewer still displayed) and the undefinedObjectShowFlap error is displayed. If the dragged/disconnected (from the flap) viewer is first deleted, the error message doesn't appear. Mike -- View this message in context: http://www.nabble.com/undefinedobject-showflag-tf3812973.html#a10801776 Sent from the Squeak - Beginners mailing list archive at Nabble.com. ___ Beginners mailing list Beginners@lists.squeakfoundation.org http://lists.squeakfoundation.org/mailman/listinfo/beginners
Re: [Newbies] Tracing back objects
On May 25, 2007, at 12:18 , subbukk wrote: Hi, The following code: CompiledMethod allInstances inject: (CompiledMethod allInstances first) into: [:m :i | i size m size ifTrue: [i] ifFalse: [m]]. gives the largest method as an object. Note that CompiledMethod someInstance is much more efficient than CompiledMethod allInstances first Is there an efficient way to trace back the method selector and its class without doing a brute force lookup? Not in 3.8, but I think later versions might cache the owner of CMs. Anyway, you might want to try this: (CompiledMethod allInstances detectMax: [:m | m size]) who - Bert - ___ Beginners mailing list Beginners@lists.squeakfoundation.org http://lists.squeakfoundation.org/mailman/listinfo/beginners
Re: [Newbies] undefinedobject showflag
Further findings. If I delete all open viewers / flaps, the error message also goes away when saving the image ! Mike -- View this message in context: http://www.nabble.com/undefinedobject-showflag-tf3812973.html#a10802839 Sent from the Squeak - Beginners mailing list archive at Nabble.com. ___ Beginners mailing list Beginners@lists.squeakfoundation.org http://lists.squeakfoundation.org/mailman/listinfo/beginners
Re: [Newbies] Re: Tracing back objects
On Friday 25 May 2007 5:02 pm, Klaus D. Witzel wrote: On pre-traits images you'd need (aMethod who) but from 3.9 on #who is deprecated. If you're on 3.9 the comment in #who tells the fast way. Thanks. methodClass and selector worked. .. Subbu ___ Beginners mailing list Beginners@lists.squeakfoundation.org http://lists.squeakfoundation.org/mailman/listinfo/beginners
Re: [Newbies] which code browser to use?
Nick Ager wrote: Hi, What are the pros and cons of the different code browsers I see in my image (it's based on Damien Cassou's squeak-web-95-2.zip). I see: * Browser (appears to be the default) * HierarchyBrowser * OBSystemBrowser * ShoutOmniBrowser * eComspletionOmniBrowser * Tric-RefactoringBrowser * WhiskerBrowser * OmniBrowser It really depends on your preference. Try them; I've been Squeak for quite a few years and I've only really ever needed to use the standard Browser. The Browser and HierarchyBrowser are standard tools in a standard image. I don't know much about the OmniBrowser, but I think it's an intelligent re-design of the standard browser in that it looks the same but works much more intelligently under the covers. I think people use it as a starting point for developing experimental browsers. Shout is a package that gives you syntax hilighting, so the ShoutOmniBrowser is Shout plus the OmniBrowser. eCompletion is a package that gives you keyword completion (ala other IDEs)... ditto for eCompletionOmniBrowser. The WhiskerBrowser has a completely different UI - some people swear by it. The ones I haven't mentioned are the ones I don't know anything about. I find myself switching between different browsers and not finding one which provides a superset of browsing functionality.I feel must be missing a trick. Is there a prefered browser amoungst more experienced users? Again, I just use the standard browser. Personally I'm dissatisfied with it because it's completely non-obvious as to how you're meant to use it - even after a few years, I still haven't worked out what the standard way of defining a new method is; usually I just cheat and modify an existing method with a new name. You'll also find that a lot of the functionality you need is done in other places in the image. The biggest Aha! moment for me was discovering alt-n (find senders of...) and alt-m (find implementers or...) - select text and press those keys. How do I register a prefered browser as the default for alt-b and tools tab-browser? I've just had a look in the image. This is what I did: 1. I vaguely recall being asked what Tool set I wanted to use at some stage, so I opened up my bog-standard browser :-) and tried to find any class with the word Tool in the name. I saw a class called ToolSet so I looked at that. 2. ToolSet has no instance methods, so I looked at the class methods. 3. This looks like it - there's a method called #browse:selector:, so I looked at that. That calls the method default which isn't there. 4. Looking for the implementation of default, I opened up a hierarchy browser on ToolSet and looked up the inheritance hiearchy. I found the implementation in AppRegistry. That calls self askForDefault. 5. I look at the implementation of askForDefault in the same class. At a brief glance, it has UI code in it, so I try calling it: ToolSet askForDefault. There you go. Michael. ___ Beginners mailing list Beginners@lists.squeakfoundation.org http://lists.squeakfoundation.org/mailman/listinfo/beginners
