Squeak-dev July 2011

squeak-dev@lists.squeakfoundation.org

61 participants
145 discussions

CameraPlugin for VM
by Torsten Bergmann 30 Jul '11

30 Jul '11

Hi VM developers (CC Squeak and Pharo list), anyone know about the state of integrating the camera plugin from scratch into the Squeak VM sources. Last discussion I know of is at: http://forum.world.st/Camera-plugins-was-Re-Video-Media-in-Squeak-td2020502… Any news on this or any progress? Are there plans to integrate the plugin into Cog as well? Thx Torsten -- NEU: FreePhone - 0ct/min Handyspartarif mit Geld-zurück-Garantie! Jetzt informieren: http://www.gmx.net/de/go/freephone

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bookmorph and ftp, anybody have this working?
by Gary Dunn 29 Jul '11

29 Jul '11

This is one of those dumb brain freeze things that I hope will be easy to answer for someone already doing this. I am finishing up my how-to-make-a-book book and want to inclde a section on uploading to a server. To get started I thought I'd work out how to upload and download pages. Right off the bat I got an error. BookMorph>>getStemUrl fails at initial isEmpty ifTrue: [initial := ServerDirectory defaultStemUrl , '1.sp']. because ServerDirectory does not have the requested server in a Dictionary. When I look at that code it appears to be creating a random name, which is not what I want. According to some class comments (sorry, can't find then now) I should come up with my url, like ftp://server/folder/myBook1.sp and when I do Book menu "send all pages to server" I should select "Use page numbers" and paste in my URL. I never got the chance to paste in my URL. Back in getStemUrl "Try to find the old place where this book was stored. Confirm with the user. Else ask for new place." | initial pg url knownURL | knownURL := false. initial := ''. I changed the value of initial to my URL, initial := 'ftp://10.0.1.10/squeakftp/myBook1.sp'. Now I am asked for the URL, with that one filled in. But then I get a prompt for the password for nil. Naturally that failed. More reading class comments and code comments (thank goodness for those!) I discovered that I can add my username with a URL of 'ftp://gary@10.0.1.10/squeakftp/myBook1.sp' Almost there. I am prompted for the URL twice. After the second prompt I get the password prompt, then an error. My FTP server has replied 550 squeakftp: no such directory (or something similar). I can connect from the same host (my laptop running FreeBSD) using the command line FTP, works fine. I can also use gFTP. I even changed the permissions on the squeakftp folder to 777. I tried 'ftp://gary@10.0.1.10/Users/gary/squeakftp/myBook1.sp' (the server is an iMac, so the full path is /Users/gary/squeakftp). Also 550. I tried 'ftp://gary@10.0.1.10//Users/gary/squeakftp/myBook1.sp' but Squeak choked on the double slash -- asked for a second password for user nil. Not a problem. Any ideas why I am getting the 550 error? Note to self: try it from Windows instead of FreeBSD. -- Gary Dunn Honolulu http://openslate.org/

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Re: [Pharo-project] DNU with beMethodArg?
by Eliot Miranda 28 Jul '11

28 Jul '11

Hi Steph, this is an interesting bug with Debugger doits inside Debugger doits. So at the outer level one has some method m0 in the debugger: nextEvent "Return the next event from the receiver." eventQueue == nil ifTrue:[^self nextEventSynthesized] ifFalse:[^self nextEventFromQueue] and in the right-hand context inspector one evaluates the following (which will cause a subscript bounds because there are no temps) ThisContext namedTempAt: 1 to create m1: DoItIn: ThisContext ^ ThisContext namedTempAt: 1 If in the debugger on m1 I evaluate e.g. ThisContext I get the below error in the compiler as it is trying to create m2 The underlying bug is that in m2 ThisContext is ambiguous. It can refer to the context for m1 or, as the programmer intends, the context for m0. What the programmer means to achieve is an m2 that reads DoItIn: ThisContext ^ (ThisContext tempAt: 0) namedTempAt: 1 where ThisContext tempAt: 0 accesses thisContext in m0. The symptom is due to Encoder>>init:context:notifying: binding ThisContext twice in aContext ~~ nil ifTrue: [| homeNode | homeNode := self bindTemp: self doItInContextName. "0th temp = aContext passed as arg" aContext tempNames withIndexDo: [:variable :index| scopeTable at: variable put: (MessageAsTempNode new receiver: homeNode selector: #namedTempAt: arguments: (Array with: (self encodeLiteral: index)) precedence: 3 from: self)]]. since aContext tempNames includes 'ThisContext' which is also self doItInContextName. I'm not sure how to fix this. One way is for the above loop to encode 'ThisContext' as 'ThisContext tempAt: 0', but that only works one level deep. Once one has an m3 it will access the wrong ThisContext, but it'll be better than the current situation as there will be no exception. On Tue, Jul 26, 2011 at 7:02 AM, Stéphane Ducasse <Stephane.Ducasse(a)inria.fr > wrote: > Hi guys > > I was debugging some bug and I got the following > > > DoItIn: ThisContext > ^ self > do: [:each | ((ThisContext namedTempAt: 1) > includes: each) > ifFalse: [^ false]] > > > I selected (ThisContext namedTempAt: 1 > > and I got MessageAsTempNode does not understand beMethodArg > > method: doit context: ctxt > " pattern [ | temporaries ] block => MethodNode." > > | sap blk prim temps messageComment methodNode | > properties := AdditionalMethodState new. > sap := self pattern: doit inContext: ctxt. > "sap={selector, arguments, precedence}" > properties selector: (sap at: 1). > encoder selector: (sap at: 1). > (sap at: 2) do: [:argNode | argNode beMethodArg]. > ^^^^ > doit ifFalse: [self pragmaSequence]. > temps := self temporaries. > messageComment := currentComment. > currentComment := nil. > doit ifFalse: [self pragmaSequence]. > prim := self pragmaPrimitives. > self statements: #() innerBlock: doit. > blk := parseNode. > doit ifTrue: [blk returnLast] > ifFalse: [blk returnSelfIfNoOther: encoder]. > hereType == #doIt ifFalse: [^self expected: 'Nothing more']. > self interactive ifTrue: [self removeUnusedTemps]. > methodNode := self newMethodNode comment: messageComment. > ^methodNode > selector: (sap at: 1) > arguments: (sap at: 2) > precedence: (sap at: 3) > temporaries: temps > block: blk > encoder: encoder > primitive: prim > properties: properties > > > argNode is a MessageAsTempNode and beMethodArg is only defined on > TempVariableNode > > > http://code.google.com/p/pharo/issues/detail?id=4551 > > Stef > > > -- best, Eliot

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https still not working properly on mac OS X
by Lawson English 27 Jul '11

27 Jul '11

I reverted my mac from Lion to Snow Leopard and tried to get a simple https URL working. Still geting error:primitiveSSLCreate. I'm using 4.2 all-in-one with the latest SqueakSSL plugin. I have tested Lion and Snow Leopard. Other people have tested Snow Leopard and Leopard (PPC) and get the same error. I haven't tried to use an https connection in a very long while so I have no idea how long this has been broken on the mac, or at least the 3 it has been tested on. r := (WebClient httpGet: 'https://msp.f-secure.com/web-test/common/test.html' )content. Any advice? I'm not up to debugging Mac plugins I'm afraid. Thanks. Lawson

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About http://source.squeak.org/trunk/Tools-cmm.345.mcz
by Edgar J. De Cleene 27 Jul '11

27 Jul '11

Chris: I found in the commit test the following > Added hot-keys for browse of inst-var refs or defs, reducing the number > required number of UI gestures for this from 3 to 1. This is something > developers use 100 times per day! > - Rename "recent classes" to new-millenium nomenclature: "back". Changed > hot-key accordingly. I don´t like the change and revert on my own .image. Where the new-millenium nomenclature is and why you think "back" reveals more the intention as "recent classes" ? Cheers Edgar

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Bug in SpFileStream>>readingFromFilename on read-only files
by christophe.jalady＠free.fr 27 Jul '11

27 Jul '11

The method "SpFileStream>>readingFromFilename" seems containing a bug: According to the name, this method should be able to read read-only files, but it does not. The reason is because it use under the hood "FileStream>>oldFileNamed:" which try to open the file in read/write mode, and so fail on read-only files: SpFileStream>>readingFromFilename: aSpFilename ... underlyingStream := FileStream oldFileNamed: self filename asString. ... ^self A way to correct this is to apply this patch: SpFileStream>>readingFromFilename: aSpFilename self filename: aSpFilename. "WRONG: underlyingStream := FileStream oldFileNamed: self filename asString." underlyingStream := FileStream readOnlyFileNamed: self filename asString. ^self To reproduce the problem just evaluate the code below: the "underlyingStream" of the 'stream' is nil because it fail to open the file (make sure that '/usr/share/icons/hicolor/48x48/apps/gnome-mines.png' cannot be opened in read/write): | stream aFilename| aFilename := SpFilename named: '/usr/share/icons/hicolor/48x48/apps/gnome-mines.png'. stream := aFilename readStream. ^[ stream binary. stream upToEnd ] ensure: [ stream close ] Note: I wrongly created a bug entry in Seaside bug-tracker ( http://code.google.com/p/seaside/issues/detail?id=664 ) Christophe

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Re: [fonc] Re: [squeak-dev] [ANN] Alan Kay to talk about "Next steps for qualitatively improving programming" at HPI in Potsdam
by Brad Fuller 27 Jul '11

27 Jul '11

This worked for me and VLC works with it. Thanks Juan. Yes, it would be nice to somehow sync the two videos. brad On Sat, Jul 23, 2011 at 18:27, Juan Vuletich <juan(a)jvuletich.org> wrote: > Leo Richard Comerford wrote: >> >> You can just download the individual items (lo and behold, RealPlayer >> allows you to download the videos if you open them individually), put >> them together in a folder with the SMIL file, and edit the SMIL to >> point to the local copies. (This was the subject of my email to Juan >> Vuletich.) >> >> Leo. >> > > Thanks Leo! For everybody else, the attach is the file Leo sent me. > > However I could not download the individual videos from Real Player for Mac. > The urls are: > rtsp://stream.hpi.uni-potsdam.de:554/Archive/HPIK_SS11/HPIK_2011_07_21_01_STREAM_video.rm > rtsp://stream.hpi.uni-potsdam.de:554/Archive/HPIK_SS11/HPIK_2011_07_21_01_STREAM_desktop.rm > > But I tried to get them via http, and succeeded. The urls are: > http://stream.hpi.uni-potsdam.de:8080/Archive/HPIK_SS11/HPIK_2011_07_21_01_… > http://stream.hpi.uni-potsdam.de:8080/Archive/HPIK_SS11/HPIK_2011_07_21_01_… > > Now I have the complete smil as a local files, and Real is happy to pause, > rewind, etc. > > It would be valuable to convert the videos to some other format, though. > What I'm not sure if there are better alternatives to Smil, to play both the > video of Alan and the video of the presentation together... > > Cheers, > Juan Vuletich > > _______________________________________________ > fonc mailing list > fonc(a)vpri.org > http://vpri.org/mailman/listinfo/fonc > >

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[ANN] Alan Kay to talk about "Next steps for qualitatively improving programming" at HPI in Potsdam
by Robert Hirschfeld 26 Jul '11

26 Jul '11

It is my great pleasure to announce Alan Kay's talk here at HPI. Title: "Next steps for qualitatively improving programming" Venue: Lecture Hall 1, Hasso-Plattner-Institut Potsdam, Germany Date and time: July 21 (Thu) 2011, 16:00-17:00 Additional information: http://www.vpri.org/html/people/founders.htm http://www.hpi.uni-potsdam.de/hpi/anfahrt?L=1 http://www.hpi.uni-potsdam.de/news/beitrag/computerpionier-alan-kay-wird-hp… (Alan's talk will be recorded and made available online.) Best, Robert -- Robert Hirschfeld Hasso-Plattner-Institut hirschfeld(a)hpi.uni-potsdam.de www.hpi.uni-potsdam.de/swa

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Daily Commit Log
by commits＠source.squeak.org 26 Jul '11

26 Jul '11

Changes to Trunk (http://source.squeak.org/trunk.html) in the last 24 hours: http://lists.squeakfoundation.org/pipermail/packages/2011-July/004875.html Name: Collections-ul.450 Ancestors: Collections-nice.449 Avoid a multiplication, use low level methods in SequenceableCollection >> #polynomialEval: for better performance. ============================================= http://lists.squeakfoundation.org/pipermail/packages/2011-July/004876.html Name: Collections-ul.451 Ancestors: Collections-ul.450 - removed WideString class>>allMethodsWithEncodingTag:, because it sent an unimplemented method #string:hasEncodingTag: - rewritten WideString class>>allMultiStringMethods and WideString class>>allNonAsciiMethods to use #allMethodsSelect: instead of reinventing the wheel. Not sure if we really need these methods here. ============================================= http://lists.squeakfoundation.org/pipermail/packages/2011-July/004877.html Name: Morphic-ul.556 Ancestors: Morphic-ul.555 Various speedups for curves: - avoid an unnecessary assert (with an unnecessary block) in Cubic>>honeIn:. - pass a point for #polynomialEval:, instead of a Float to avoid Point-Float multiplications in Cubic>>measureFor: - avoid interval creation in SequenceableCollection>>changeOfChangesInSlopes: and SequenceableCollection>>closedCubicSlopes - avoid creating intermediate objects in SequenceableCollection>>cubicPointPolynomialAt: ============================================= http://lists.squeakfoundation.org/pipermail/packages/2011-July/004878.html Name: Morphic-ul.557 Ancestors: Morphic-ul.556 Added a missing whitespace. ============================================= http://lists.squeakfoundation.org/pipermail/packages/2011-July/004879.html Name: Tools-bf.369 Ancestors: Tools-btc.368 If the user changes a class comment in the SystemBrowser's annotation pane, make it do what the user expects. See http://stackoverflow.com/questions/6802798 ============================================= http://lists.squeakfoundation.org/pipermail/packages/2011-July/004880.html Name: Tools-bf.370 Ancestors: Tools-bf.369 remove method that accidentally slipped into last commit ============================================= http://lists.squeakfoundation.org/pipermail/packages/2011-July/004881.html Name: Graphics-bf.188 Ancestors: Graphics-nice.187 - show floats when exploring transforms ============================================= http://lists.squeakfoundation.org/pipermail/packages/2011-July/004882.html Name: Tools-bf.371 Ancestors: Tools-bf.370 Fix DNU by copying Browser>>toggleBreakOnEntry to MessageSet. ============================================= http://lists.squeakfoundation.org/pipermail/packages/2011-July/004883.html Name: System-eem.450 Ancestors: System-ul.449 Fix allBehaviorsDo: to avoid duplicates, and to be a lot simpler. ============================================= http://lists.squeakfoundation.org/pipermail/packages/2011-July/004884.html Name: ToolsTests-eem.51 Ancestors: ToolsTests-ul.50 Test Fix allBehaviorsDo: avoids duplicates. =============================================

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Inbox notifications broken?
by Bert Freudenberg 25 Jul '11

25 Jul '11

I just uploaded a package to the inbox, and it appears to have succeeded, but there was no notification on the list? - Bert - http://source.squeak.org/inbox/Collections-bf.452.mcz Name: Collections-bf.452 Author: bf Time: 25 July 2011, 7:44:57.632 pm UUID: 8a19c224-9ce5-4baa-95c7-20561b23719e Ancestors: Collections-ul.451 A krevitch to snork your flads: '{1:U}meters, {2:U}liters, {3:u}m, {4:u}Hz' format: {50300. 6. 0.013. 1e7} => '50.3 kilometers, 6.0 liters, 13.0 mm, 10.0 MHz' (see http://gigamonkeys.wordpress.com/2010/10/07/lost-u-directive/ )

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