Squeak-dev December 2001

squeak-dev@lists.squeakfoundation.org

137 participants
354 discussions

[BUGS] Looking for plugins (Linux)
by Joshua 'Schwa' Gargus 29 Dec '01

29 Dec '01

It seems to me that looking for a loadable module in the same directory that the VM exists in is a very sensible behavior. For some reason, the Linux VM does not do this. There seems to be no security reason for this; if a terrorist could put bad plugins in the VM directory, said terrorist could also replace the VM with their own. On a related note, "Smalltalk vmPath" incorrectly answers the directory that the image resides in. Joshua

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[BUG] w/b on undo in browser code pane
by Joern Eyrich 29 Dec '01

29 Dec '01

* open browser * select method * append one space to end of method * select "undo" from menu -> walkback Error: incorrect number of arguments

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Re: Two Pattern Questions
by Lex Spoon 29 Dec '01

29 Dec '01

"Eddie Cottongim" <cottonsqueak(a)earthlink.net> wrote: > 1) I have an object which relies on subclasses of another class, we'll call > it AbstractHeavyLifter, to do some work. I want to be able to give a user a > choice of all the kinds of HeavyLifter available, and I don't want to > hard-code which ones they can use, since they could add new ones, etc. What > I do right now is get all the subclasses of AbstractHeavyLifter and ask each > one if I can use it in menus (abstract classes will want to say No here). > This is how the Morph menus work, and I'm 90% sure its the Right Thing, but > I wanted to check and make sure. > Well, I don't think it's proper to search through the system's code to figure out what to do. First, you shouldn't have to put the heavy lifters in a particular place in the hierarchy. This is Smalltalk, and you can subclass anywhere you please. Second, this allows merely *adding* a subclass to change the behavior of the system, even if you haven't explicitly mentioned that subclass anywhere. I don't like this, though it's a philosophical reason more than anything: changes to *behavior* should be done by changing methods, not changing classes. Adding classes is a way to declare a new kind of thing that *can* be created. Finally, a very pragmatic reason to avoid code like this is that the code exploration tools don't deel so well with it. In particular, "show uses of this class" will return no uses for the HeavyLifter subclasses! Here's an alternative: make a method somewhere listing all of the available HeavyLifter's: AbstractHeavyLifter class>>standardHeavyLifters ^{HeavyLifter1. HeavyLifter2. HeavyrLifter3 } This list is easy to mantain. It allows the lifter classes to live anywhere in the class hierarchy. Adding classes no longer causes changes to occur. And "show uses of this class" will now point to this method, which will greatly help anyone trying to understand the code. To get mystical, I think your code should say what it wants as directly as is reasonable, and it should *not* mix up different concepts. The list of available classes should not be mixed up with the the list of classes available for a specific purpose. -Lex

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Re: [ENH] CelesteAddressBook
by Giovanni Giorgi 28 Dec '01

28 Dec '01

danielv(a)netvision.net.il wrote: > Giorgi, > > I tried to file this in and failed. My first two problems - [...] Yes, I know and I will fix it in the next release (I hope to post it in the next week). > > Looks very nice, and it could be quite useful to have an address list > that's automatically compiled. It would be VERY cool if it could > recognize variants on the same contact . I am working on it but it is not so easy...I should use perl for a simpler code ;P > > Also, I don't know about you, but I have many, many addresses, many of > people that simply got the same spam as me (%#$!@!!!). Some means for > filtering or prioritizing them would be great. People I have mailed or At the meantime, the addressbook collect a "frequency" field for prioritizing based on how often the email has been hit. I do not use it for the meantime. If you have some idea, please send them to me, > This looks like the start of something pretty cool... Thank you. Excuse me for the ugly error on the preamble.... And last but not least, how can I add this small code to the 'standard' squeak image? Must I only post it to the list using the '[ENH]' tag? Or must I send a request do Dan Ingalls? Thank you.

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Squeak Foundation
by Dan Ingalls 28 Dec '01

28 Dec '01

Folks - For those interested in the formation of a Squeak Foundation, if you are not already subscribed to the list below, now would be a good time to do so: <http://lists.squeakfoundation.org/listinfo/squeakfoundation>, or <mailto:squeakfoundation-request@lists.squeakfoundation.org?subject=subscribe> We are on a fast track to establish a viable interim structure in the next couple of weeks, and a process for evolving from there into a well-defined and managed organization on a more reasonable time scale. The relevant discussions will take place on the SqueakFoundation list. - Dan

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[BUG] Gribbley alert
by Doug Way 28 Dec '01

28 Dec '01

(A minor bug.) With the new list pane focus highlighting in 3.2a-4599, if you slowly drag the mouse from inside a SystemWindow list pane across a window border (which doesn't have a scrollbar in the way), a chunk of the pane highlighting rectangle will be left missing. For example, assuming scrollbars are configured to appear on the left side of the pane, slowly drag the mouse from the upper-right (method) pane of a browser window, to the right, so that it leaves the window. Gribblies! - Doug Way dway(a)riskmetrics.com

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Re: [ENH] CelesteAddressBook
by Doug Way 28 Dec '01

28 Dec '01

Giovanni Giorgi wrote: > > And last but not least, how can I add this small code to the 'standard' > squeak image? > Must I only post it to the list using the '[ENH]' tag? Yes, that's all you need to do. All posts to the list with [ENH] or [FIX] or [GOODIE] in the subject will eventually be compiled by the harvesters and considered for inclusion in the standard squeak image. For more details, see the "Reporting Bugs and Fixes" page on the Swiki: http://minnow.cc.gatech.edu/squeak/398 > Or must I send a request do Dan Ingalls? No, you shouldn't need to send a special request to Dan or anyone else. - Doug Way dway(a)riskmetrics.com

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Request for Explorer improvements
by ducasse 28 Dec '01

28 Dec '01

Hi does somebody made an enhancement so that the explorer window acts as the window label of the inspector: showing the class of the inspected object. It would be cool if the class of root of the explorer or the selected items would be displayed in the window label. Then does somebody introduced shortcut for the explorer? Stef

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: as method selector??????
by ducasse 28 Dec '01

28 Dec '01

Hi I'm implementing a visitor based pretty printer can somebody explain to me what is a selector containing only the character : (as shownin the MessageNode method)? MessageNode>>printOn: aStream indent: level | leadingKeyword | "may not need this check anymore - may be fixed by the #receiver: change" special ifNil: [^aStream nextPutAll: '** MessageNode with nil special **']. (special > 0) ifTrue: [self perform: self macroPrinter with: aStream with: level] ifFalse: [selector key first = $: ifTrue: [leadingKeyword _ selector key keywords first. aStream nextPutAll: leadingKeyword; space. self printReceiver: receiver on: aStream indent: level. self printKeywords: (selector key allButFirst: leadingKeyword size + 1) arguments: arguments on: aStream indent: level] ifFalse: [(aStream dialect = #SQ00 and: [selector key == #do:]) ifTrue: ["Add prefix keyword" aStream withStyleFor: #prefixKeyword do: [aStream nextPutAll: 'Repeat ']. self printParenReceiver: receiver on: aStream indent: level + 1. self printKeywords: selector key arguments: arguments on: aStream indent: level prefix: true] ifFalse: [self printReceiver: receiver on: aStream indent: level. self printKeywords: selector key arguments: arguments on: aStream indent: level]]]

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[FIX] setVersionFIX-jet
by John Tobler 28 Dec '01

28 Dec '01

from preamble: "Change Set: Change Set: setVersionFIX-jet Date: 26 December 2001 Author: John Tobler Fixes a minor 'Date not indexable' bug in SystemVersion setVersion."!

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