Squeak-dev May 2006

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185 participants
370 discussions

[ANN] 3.9-7027
by Stéphane Ducasse 02 May '06

02 May '06

--------------------------------- 0003520: Chronology Tests for hash failed in 7025; fixes included (by Tom Koenig) --------------------------------- 0003518: SkipListTests fails/errors in 7025;SkipListTestsFixes (by Tom Koenig) --------------------------------- 0003373: Float asFraction does not handle gradual underflow --------------------------------- 0003339: [Fix] Simple button morphs don't reset their color properly when balked. --------------------------------- Greetings for the cellar of http://www.dagstuhl.de Stef

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headless squeak for nslu2?
by Brian Zhou 02 May '06

02 May '06

Hi all squeakers, I've ported quite a few languages to the nslu2 optware (see http://nslu2-linux.org for detail). The only major language not running on the "slug" is Smalltalk. Any idea where to start to get a headless squeak running on the slug? I vaguely remember there is some package allow one to use web browser as a Smalltalk browser. Combined with a headless image, that would be a fun environment to experiment. Any pointer would be greatly appreciated. -Brian Zhou http://www.nslu2-linux.org/wiki/Profiles/BrianZhou

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Re: Counting from zero
by Wolfgang Helbig 02 May '06

02 May '06

Hi Attis, You wrote, >I find Laurence's solution very elegant. I can even imagine adding a >method to Integer: > >Integer>>countZero > >^ self + 1 > >Then you could have: > >someCollection at: 5 countZero > >Legible and simple, what do you say? Rejected! Proposals like yours and Laurence's are steps towards the wrong direction. Why? Because they add complexity without neccessity. Programs will be harder to understand, protocols will be harder to specify and programs will be harder to write and prove correct if one always has to keep in mind which type of indexing is used today. It looks far clearer to me to have one kind of indexing instead of two, even if the one turns out to lead to clumpsy programs at times. Just learn to cope with it. At least for the time being. I'd refrain from trying to mix Smalltalk and C. This leads to monster languages like Java, C++ or C#, that are much harder to master than Smalltalk even though they start indexing at zero. The Romans sayed: Simplex Veri Sigillum which means: Simplicity is the hallmark of truth And I'd like to add Simplicity is the hallmark of Smalltalk Greetings Wolfgang -- Weniger, aber besser.

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Re: new Smalltalk programmer's thoughts
by Wolfgang Helbig 02 May '06

02 May '06

Hi Yoshiki, as you and others pointed out: > Also, in Smalltalk, Streams are 0-based as nicolas and others >mentioned. > The AltoFileStream should've follow this convension, instead of >allowing [1..size] indices. I agree! It not only *should* follow this convention, but it *must* follow it. After all, I programmed AltoFileStream to be used by the Hobbes Emulator, which expects a FileStream to read the snapshot. So I subclassed FileStream and tried to implement its protocol. Later I found out, that ReadStream suffices for this purpose. Anyway, I had to implement the semantics of #postion and #position: as expected by the Hobbes Emulator. Since I didn't find a specification of that protocol, I naively assumed that position is supposed to be in [1..size]. After all, this is the natural range of indexes in Smalltalk, isn't it? But I was utterly wrong, which I found out when I tried to make Hobbes read the snapshot from an AltoDisk. The position is supposed to be in range [0..size]. Which looks very unnatural to me. With this range, position looses the nice property of being a valid index. So you have to make sure you never access the byte indexed by the current position. Instead you always use current position + 1. Unix files are more elegant in this respect. Their position is in the range [0..size), which happens to be the range of valid "Unix indexes". And I feel much more comfortable with [0..size) than with [0..size] or [1..size]. Thanks to everyone on this list for their answers! I've learned a lot! Greetings Wolfgang, a humble programmer -- Weniger, aber besser.

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Squeak Awk Rumor
by SmallSqueak 02 May '06

02 May '06

Dear Squeaker, Does any one know where is Squeak Awk available for download? It is rumored Squeak Awk will be used to run the robots in the Sun SPOT project (NASA is going to land the robots on the sun to count the spots?). Let's hope some Squeak robotics expert will confirm or deny this rumor. Oh, BTW, that Squeak Awk is named Squawk and it's a VM. Cheers, SmallSqueak

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[ANN] 3.9a7026
by Marcus Denker 02 May '06

02 May '06

Hi, New 39a7026 is up (Harvesting bone by Stef). Beta is coming closer... http://ftp.squeak.org/3.9/Squeak3.9a-7026.zip ChangeLog ========== Change Set: LongDelayFixes Date: 4 October 2005 Author: tim(a)rowledge.org See Mantis bug 1840 and 854. This changeset allows a too-long Delay to fail the relevant primitive and schedules a fake delay to keep the timer system going. I claim this is preferable to disallowing long delays. Also slightly improves handling of rollover and the treatment of multiple delays with the same resumption time" --------------------------------- 3515 - Parser fails in #defineClass: becasue Metaclass doest not understand #category (DF) --------------------------------- 003513: [ENH] ToolBuilderBldEnh-KR (korakurider) ToolBuilder>>(class)build: enable default builder to build objects without opening. It's useful for building authoring prototypes for ToolBuilder-based tools in parts bin. --------------------------------- 0003510: In 3.9a requesting a language change leads to infinite generation of testRunners (korakurider) --------------------------------- 0003504: Float asInteger conversion is inexact... (nicolas cellier)

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Re: Welcome to the "Beginners" mailing list
by Herbert König 02 May '06

02 May '06

Hello, I like the tone of the welcome message but I feel the English is not completely correct. Some native speaker please look into this. line 2: brlso> Squeak is a really cool and powerful environment but Smalltalk is an ^^^ I think this should read ... and (not but) Smalltalk is an elegant and powerful ... Not sure about the next two ones. brlso> elegant and powerful language, however it is different than ^^^^ however it is different from (not than) traditional languages...? brlso> traditional languages, so do not hesitate to ask questions. We will do brlso> our best to answer them and to learn with you. ^^ omit the to? brlso> We created this list so that any newcomers in squeak can dare to ask brlso> all the questions they have, so enjoy it. Cheers Herbert mailto:herbertkoenig@gmx.net

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Re: new Smalltalk programmer's thoughts
by Wolfgang Helbig 02 May '06

02 May '06

Hi tim, you mentioned: >Ultimately, Smalltalk, like all other languages, systems, cars, >planes, boats, foods, political parties, comics, games etc is what it >is. If you like it - Enjoy! I certainly do! But I must admit that once in a while I get most enjoyment by not accepting "it" as it is. There are days I dare to think about adapting it to meet my needs. Even if this means considering "mainstream" or "low level" programming idioms like counting from zero. Sorry about my bad habits -:) Greetings Wolfgang -- Weniger, aber besser.

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TextMorph Cursor issues
by Viral Mehta 02 May '06

02 May '06

We are inheriting a TextMorph to our class and trying to use to it to make an editor application (like SubEthaEdit on the macs). When we use color information on the Text in the TextMorph the cursor jumps to the zero position after every character I type. But when I do not different color information about each character, the cursor remains fine. Could someone tell me what the problem could be here? I am using the (cursorWrapped: aNumber) message to set the cursor position. Thank you, Ishaan

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[ANN] New beginners squeak mailing-list
by stéphane ducasse 02 May '06

02 May '06

Hi all beginners(a)lists.squeakfoundation.org is ready. If you have problem with the english welcome message please send me something better or more english :) http://lists.squeakfoundation.org/mailman/listinfo Stef

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