Squeak-dev December 2000

squeak-dev@lists.squeakfoundation.org

96 participants
272 discussions

[ENH] Undeclared cleanup
by Michael Rueger 23 Aug '04

23 Aug '04

Hi all, this tiny goodie removes all entries without references from Undeclared. Maybe this should be called after every file in. Michael 'From Squeak2.8alpha of 19 January 2000 [latest update: #2052] on 5 May 2000 at 1:27:13 pm'! !Utilities class methodsFor: 'miscellaneous' stamp: 'mir 5/5/2000 13:26'! cleanupUndeclared | toBeRemoved refs | "Utilities cleanupUndeclared" toBeRemoved _ Set new. Undeclared associationsDo: [:assoc | refs _ Smalltalk allCallsOn: assoc. refs isEmpty ifTrue: [toBeRemoved add: assoc key]]. toBeRemoved do: [:each | Undeclared removeKey: each]! !

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[ENH] new String modifier: String>>asPlural
by Norton, Chris 24 May '04

24 May '04

Hi Folks. Here's the preamble from my changeset: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ "OK. You could say that this is a silly crusade, but I like my Squeak messages to be in proper English (at least when the language you're using is English). I was messing around with the HangMan file-in and I got a walkback that had the following title: 'Error: HangManPhrases classs are not indexable'. I just couldn't stand the extra 's' on 'class', so I created a nifty new String method called asPlural and I modified the sender of the odd string to use the new String modifier. Take it or leave it, but I think this makes auto-generated text just a little easier to read." ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ I hope you find this new String modifier useful too. Cheers! ---==> Chris <<PluralStrings-ccn.cs>>

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[ENH] SerialPort, remember them?
by David N. Smith (IBM) 10 Sep '01

10 Sep '01

Hi: I've been playing with serial ports on my Powerbook G3 and I discovered some not so nice actions in class SerialPort. If the port is in use elsewhere, trying to open it gets a Primitive Error. I'd rather have my code get back some indication that the port didn't open, so I made some small mods to SerialPort, which are attached. Basically, primitives used during open answer nil if they fail, and the open method answers nil also. Dave _______________________________ David N. Smith IBM T J Watson Research Center Hawthorne, NY _______________________________ Any opinions or recommendations herein are those of the author and not of his employer.

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[BUG] Socket assumes connection in Linux
by ajh18＠cornell.edu 26 Mar '01

26 Mar '01

When I do: Socket initializeNetwork. s _ Socket new connectTo: (NetNameResolver addressFromString: '127.0.0.1') port: 2001. It always returns a connected socket even when there is no socket listening on 2001. (s waitForConnectionUntil: Socket standardDeadline) returns true right away. It is not until I attempt to send data that its status changes from connected to otherEndClosedButNotThisEnd and an error is raised. I am the only one having Linux socket problems? Can anyone repeat this problem or the problem I posted on March 23 entitled "[BUG]Socket waits unnecessarily in linux"? Thanks, Anthony Image version: Squeak3.1alpha of 27 February 2001 latest update: #3848 VM version: Squeak3.1alpha of 27 February 2001 [latest update: #3776] for: unix

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Dictionary initialization syntax
by Mark Greenaway 10 Jan '01

10 Jan '01

I'm fairly new to Smalltalk and have been learning mostly by looking at web pages and bits of Squeak code. I was wondering if there was a way to initialise dictionaries in the same way you can in Python i.e. dict = {1 : 2, 3 : 4} I was hoping something like {1->2. 3->4} asDictionary might work, but asDictionary converts the keys to strings using printString. Should I just change asDictionary or is there a better way? Mark

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SuperSwiki usage
by Bob Arning 04 Jan '01

04 Jan '01

Hi All, Having had the log running for a week now, I thought some of you might be interested in the distribution of users. You may note the googlebot has been sniffing. Let me know if you start seeing the SuperSwiki in Google search results. Cheers, Bob 1529->'??.' 703->'net.one.' 359->'se.chello.' 144->'com.bellglobal.' 114->'arpa.in-addr.' 111->'com.sdrc.' 99->'de.tu-ilmenau.' 92->'ch.bluewin.' 88->'com.mindspring.' 88->'au.net.' 86->'com.hp.' 85->'com.dixie-net.' 64->'com.cablespeed.' 60->'net.bellsouth.' 59->'com.telocity.' 58->'net.telenor.' 48->'com.sprint.' 45->'nl.knoware.' 42->'com.vanguard.' 41->'net.pacbell.' 40->'com.lmco.' 40->'com.scsnet.' 33->'sk.telecom.' 33->'net.home.' 29->'com.googlebot.' 27->'net.psi.' 24->'net.mksat.' 24->'pk.net.' 21->'ch.freesurf.' 17->'edu.gatech.' 16->'net.t-dialin.' 14->'edu.byu.' 13->'ar.com.' 12->'net.mcbone.' [..small numbers snipped...]

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[ENH] Change List - Filter older versions
by Gerardo Richarte 03 Jan '01

03 Jan '01

When maintaining a package across squeak updates you usually change methods that then get changed on a new update. The task to keep your changes up to date is hard... this may help a little: on a change list, as opened from a file list/browse changes, you can remove all methods with a timestamp newer than the current stamp for that same method. As a result, you get a changelist with only those methods on the .cs file you opened, that whould overwrite newer versions if filed in. Changed Bye! Richie++ Change Set: filterOlderVersions Date: 26 December 2000 Author: MathMorphs Added an option to change lists to filter all methods from a changeset that are older than the current (system) version. Useful when you are maintaining a package across squeak updates 'From Squeak2.9alpha of 13 June 2000 [latest update: #3144] on 26 December 2000 at 10:58:53 pm'! "Change Set: filterOlderVersions Date: 26 December 2000 Author: MathMorphs Added an option to change lists to filter all methods from a changeset that are older than the current (system) version. Usefull when you are mantaining a package across squeak updates"! !ChangeList methodsFor: 'menu actions' stamp: 'r++ 12/26/2000 22:20'! changeListMenu: aMenu "Fill aMenu up so that it comprises the primary changelist-browser menu" ^ aMenu labels: 'fileIn selections fileOut selections... compare to current toggle diffing select conflicts with any changeset select conflicts with current changeset select conflicts with... select unchanged methods select methods for this class select all deselect all browse current versions of selections remove doIts remove older versions leave only older versions remove selected items remove unselected items' lines: #(2 4 6 9 11 12) selections: #(fileInSelections fileOutSelections compareToCurrentVersion toggleDiffing selectAllConflicts selectConflicts selectConflictsWith selectUnchangedMethods selectMethodsForThisClass selectAll deselectAll browseCurrentVersionsOfSelections removeDoIts removeOlderMethodVersions leaveOlderThanSystem removeSelections removeNonSelections) "select such that... selectSuchThat" ! ! !ChangeList methodsFor: 'menu actions' stamp: 'r++ 12/26/2000 22:53'! leaveOlderThanSystem "leave only those methods that are older than the current version" | class newChangeList newList sysStamp | newChangeList _ OrderedCollection new. newList _ OrderedCollection new. changeList with: list do: [:change :stamp | (class _ change methodClass) ifNotNil: [ sysStamp _ Utilities timeStampForMethod: (class compiledMethodAt: change methodSelector ifAbsent: [CompiledMethod new]). sysStamp size > 0 ifTrue: [ (Date fromMethodTimeStamp: (stamp copyAfter: $;)) <= (Date fromMethodTimeStamp: sysStamp) ifTrue: [ newChangeList add: change. newList add: stamp]]. ] ]. newChangeList size < changeList size ifTrue: [changeList _ newChangeList. list _ newList. listIndex _ 0. listSelections _ Array new: list size withAll: false]. self changed: #list! ! !Date class methodsFor: 'instance creation' stamp: 'r++ 12/26/2000 22:46'! fromMethodTimeStamp: aString ^ self readFrom: aString substrings second readStream ! ! ChangeList removeSelector: #leaveOnlyOlderThanSystem!

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Re: String literal at:put: question
by Lex Spoon 01 Jan '01

01 Jan '01

Actually, it's not too hard to create a ReadOnlyString and ReadOnlyArray which have several methods overridden to produce errors. Overriding at: and basicAt: goes an awefully long way. Then, the Parser needs to be updated. I did this once, but it was in an image too divergent from the main Squeak image that it could really be useful. :| (I at least *tried* to make Float's and Characters read-only, too, though I don't remember how far I got!) -Lex Hans-Martin Mosner <hm.mosner(a)cityweb.de> wrote: > Avi Schwartz wrote: > > > Hi, > > > > I am new to Smalltalk and Squeak, so please bear with me... > > Welcome to The Club :-) > > > I am trying to figure out why the result of > > > > 'abcdef' at: 1 put: $x > > > > is $x and not 'xbcdef'. > > That has been the Smalltalk behavior since the dark ages... I presume > the intention is to make it semantically similar to assignment > expressions, whose value is equal to the assigned value. To achieve your > intention, you should evalutae > 'abcdef' > at: 1 put: $x; > yourself > which returns the receiver of the first message expression. > > > Now, to complicate matters even worse for me, according to the book > > 'Smalltalk, Objects, and Design' by Chamond Liu, the result I should > > expect is an exception since a string literal is immutable. > > Squeak does not currently have really immutable objects (with the > exception of SmallIntegers). This is also true for a number of other > Smalltalks. To make your code portable to Smalltalks with immutable > literals, you should write > 'abcdef' copy > at: 1 put: $x; > yourself > It would certainly be a great service to the Squeak community to > implement immutable objects, but I think that this requires quite some > in-depth knowledge of the VM and/or image to do, so this is certainly > not a beginner's project. > > Cheers and happy holidays, > Hans-Martin

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Desired Windows/CE ports? What do you want?
by Ned Konz 01 Jan '01

01 Jan '01

I finally got around to working with the latest Windows/CE code that I could find. The latest source files I've been able to find were called Squeak-pre-2_8-src.zip and were on Andreas' FTP site. On Nov. 17, Yasuhiro KURAHARA <kurahara(a)kobe.hp.com> announced a Squeak 2.8 VM for Windows/CE. I used his diffs, and did some more work to fix problems like hanging at exit and screen damage from the taskbar (this last is not yet finished). I also updated the code to use the newer (>= WinCE OS 2.11) libraries, which include standard library functions that had previously been provided by the Squeak VM support code. I'd be glad to put the results of this work up on my web site, but need to know which platforms to port for. There are a number of supported chips (MIPS, SH3, ARM, Thumb, PPC, x86) and several OS choices (H/PC Pro 2.11, Pocket PC 3.0, Pocket PC 2.11, as I remember). I only have a MIPS device (a NEC MobilePro 770, which is a H/PC Pro 2.11), so can't test very well. If there are any other requests, I'll try (possibly not very soon) to compile for these as well. So what do you want ports for? Tell me CPU type and OS... -- Ned Konz currently: Stanwood, WA email: ned(a)bike-nomad.com homepage: http://bike-nomad.com

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Re: Squeak on iPaq..success!
by John.Maloney＠disney.com 31 Dec '00

31 Dec '00

Hi, Kevin, It's incredible how critical the cache is for Squeak performance. >From comparing Tim and your figures, it looks like the larger cache of the SA110 nearly doubles Squeak performance at the same clock speed. Of course, some of the increase is from the C code optimization in Tim's VM, but it's hard to imagine that accounting for more than 20-30% of the difference. For comparison, here are the figures for two Sharp Zaurus PDA's, both with Hitachi SH-3 processors: ~120 MHz: 2941176 bytecodes/sec, 133739 sends/sec ~60 MHz: 1801801 bytecodes/sec, 61584 sends/sec I can't fire up my Casio E-105 right now, but I think it had performance similar to the faster SH-3 above. If you manage to get the comiler to do some optimization, let me know how much difference that makes. We actually have an iPaq and I am looking forward to getting Squeak up on it. You mentioned that you were writing down the steps needed to put Squeak on the iPaq. Let me know when that's available (but no rush; it's the holidays!). If I can get the proper development environment set up, I may try to compile a VM myself. Perhaps there is some level of C optimization that produces correct but faster code. One question: How much RAM is available for the Squeak object heap? (See the VM statistics available under the "help" menu.) -- John Kevin wrote: >I managed to get the image on a read/write segment of memory and I >got that benchmark for you...the result of "0 tinyBenchmarks" is: >4667444 bytecodes/sec; 155544 sends/sec > >Note that this is on an unoptimized VM (compiling with optimizations >has problems on ARM). Tim Rowledge wrote: >That's not too bad for an unoptimized VM; my 202MHz SA110 Acorn (2 >x bigger cache than iPaq SA1100, but much slower main memory bus - hey, >it's six years old!) gets 10m & 374k on the same test. I _think_ I got >up to about 8m bc/sec on the original Itsy port. On a 276MHz SA110 >NetWinder I think it's more like 12m & 600k.

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