February 2012 - Pharo-dev - lists.pharo.org

[Pharo-project] 1.4 image
by Schwab,Wilhelm K Feb. 29, 2012

Feb. 29, 2012

Sig, I might have succeeded in building an image. I had to proceed past a fair number of Seaside 2-3 related errors, but the bulk of my code appears to be loaded. Alien certainly seems to have been the problem. The version of Migrate I used is attached. What do you think? Bill

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[Pharo-project] Proposal: coverage tests
by Pavel Krivanek Feb. 29, 2012

Feb. 29, 2012

Hi, what about to intrroduce tests that will test coverage of tests? Some improved version of the code below. Are there some tool for Smalltalk showing uncovered lines of code? There are such tools in Java world :-) One little problem is that this code do not work on Linux because of a VM error that cause test failures on CI server too. Cheers, Pavel | class test trace classTrace result | class := Time. test := TimeTest. trace := Dictionary new. thisContext runSimulated: [test suite run] contextAtEachStep: [ :current | | cls sel methods bytecodes | cls := current method methodClass. sel := current method selector. methods := trace at: cls ifAbsentPut: Dictionary new. bytecodes := methods at: sel ifAbsentPut: Set new. bytecodes add: current pc.] trace . result := String streamContents: [:s | classTrace := trace at: class ifAbsent: nil. classTrace ifNil: [ s nextPutAll: 'Class ', class name, ' not called'; cr. ] ifNotNil: [ s nextPutAll: class name; cr. class selectorsDo: [:sel | | m usedBytecodes allBytecodes | m := class >> sel. usedBytecodes := (classTrace at: sel ifAbsent: Set new) size. allBytecodes := 0. m symbolicLinesDo: [:pc :lineForPC | allBytecodes := allBytecodes + 1 ].. s tab; nextPutAll: sel; nextPutAll: ' - '; nextPutAll: (usedBytecodes / allBytecodes * 100) asFloat asString; nextPutAll: '%'; cr. ]]. ]. result..

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[Pharo-project] shorten petitparser expressions
by Igor Stasenko Feb. 28, 2012

Feb. 28, 2012

Why i need to put #asParser everywhere? $a asParser / $b asParser / #foo asParser a proper implementation of #/ makes the above to just: $a asParser / $b / #foo which is much more cleaner and convenient. Or, is there a reason to not send #asParser to every argument where parser expected? -- Best regards, Igor Stasenko.

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[Pharo-project] [update 1.4] #14366
by Marcus Denker Feb. 28, 2012

Feb. 28, 2012

14366 ----- Issue 5418: compressedSourceCodeAt: is not used http://code.google.com/p/pharo/issues/detail?id=5418 Issue 5414: class FormStub is unused and undocumented http://code.google.com/p/pharo/issues/detail?id=5414 Issue 5417: FlatMessageListBrowser error on method removal http://code.google.com/p/pharo/issues/detail?id=5417 Issue 5160: sourceCodeAt: vs. sourceMethodAt: http://code.google.com/p/pharo/issues/detail?id=5160 -- Marcus Denker -- http://marcusdenker.de

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[Pharo-project] Few Aida on Swazoo benchmarks, Pharo and VW
by Janko MivÅ¡ek Feb. 28, 2012

Feb. 28, 2012

Hi guys, Encouraged by recent Philippe's benchmarking I did similar on Aida with Swazoo web server, adding the comparison of Pharo with VisualWorks. Results are interesting, Pharo is now only 3x slower than VW on dynamic page generation but on network layer it is the same or even slighty faster, while it was around 10x slower on Squeak back in 2008 [1], Results (requests/s) -------------------- 1. Dynamically generated 3KB login page (/admin?view=login) VW: 120, Pharo: 40 ratio: 3x 2. Aida ping with zero size response (/ping.html) local: VW: 4700, Pharo: 4500 ratio: 1,04x lan: VW: 4500 Pharo: 4600 ratio: 0,97x inet: VW: 4000, Pharo: 3000 ratio: 1,33x 3. Aida ping with 8K response local: VW: 2600, Pharo: 3100 ratio: 0,84x lan: VW: 1400, Pharo: 1400 ratio: 1,00x inet: VW: 140, Pharo: 140 ratio: 1,00x Note: network saturation! Legend: local: client run on local machine lan: client run on machine over 1Gb/s LAN netwrok inet: client run on machine over 100/10Mb/s internet connection Test environment ---------------- ab (ApacheBech) testing tool Test machine: Intel Core i7 860 (2 cores) at 2.80GHz, 8GB RAM openSuse 11.4 64bit Linux Pharo 1.3 13320 OneClick (with CogVM) VisualWorks 7.8 Aida 6.4 (right after installation) Swazoo patch to allow Keep Alive (ab -k) over HTTP 1.0: HTTPConnection>>getAndDispatchMessages ... (self task request isHttp10 and: [self task request isKeepAlive not]) ifTrue: [self close]. ... [1] Swazoo vs. Apache Benchmark (2008) http://www.swazoo.org/benchmarks/swazoo-vs-apache.html Best regards Janko -- Janko MivÅ¡ek Aida/Web Smalltalk Web Application Server http://www.aidaweb.si

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[Pharo-project] [update 1.4] #14365
by Marcus Denker Feb. 28, 2012

Feb. 28, 2012

14365 ----- Issue 5413: Fix in LazyListMorph http://code.google.com/p/pharo/issues/detail?id=5413 Issue 5408: remove all remaining references to BlockContext and #blockCopy: http://code.google.com/p/pharo/issues/detail?id=5408 Issue 5156: ClassBuilder allows the creation of invalid instance-, class instance-, class-, and pool-variables http://code.google.com/p/pharo/issues/detail?id=5156 Issue 2255: fix comment and use of #flushCache http://code.google.com/p/pharo/issues/detail?id=2255 Issue 5412: Fix in AbstractTool again ;) ) http://code.google.com/p/pharo/issues/detail?id=5412 -- Marcus Denker -- http://marcusdenker.de

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Re: [Pharo-project] Updated Download page 1.4
by Marcus Denker Feb. 28, 2012

Feb. 28, 2012

On Feb 27, 2012, at 6:57 PM, Janko MivÅ¡ek wrote: > Hi Marcus, > > An OneClick build would be also very useful to test 1.4 quickly. Yes. 1.3, too. > Those > OneClick were once built by Jenkins, is there any reason they are not > anymore? > Time and Energy. Marcus -- Marcus Denker -- http://marcusdenker.de

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[Pharo-project] Updated Download page 1.4
by Marcus Denker Feb. 28, 2012

Feb. 28, 2012

Updated: http://www.pharo-project.org/pharo-download/unstable-1-4 So all the downloads (with the exception of the windows VM) are now pointing just to the build server. Marcus -- Marcus Denker -- http://marcusdenker.de

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[Pharo-project] Are Objects really hard?
by Janko MivÅ¡ek Feb. 27, 2012

Feb. 27, 2012

Hi guys, Again one interesting topic for this weekend to discuss. David Nolen, a Lisp and JavaScript guy posted in his blog an article titled Illiterate Programming [1] where he said: "...Yet I think Smalltalk still fundamentally failed (remember this is a programming language originally designed to scale from children to adults) because *Objects are really hard* and no-one really understands to this day how to do them right...." He links to Alan Kay post [2] back in 1998 where he talks about problems with inheritance: "Here are a few problems in the naive inheritance systems we use today: confusions of Taxonomy and Parentage, of Specialization and Refinement, of Parts and Wholes, of Semantics and Pragmatics..." Let we concentrate on broader "Objects are really hard and no-one really understands to this day how to do them right" claim and not merely inheritance, please. Best regards Janko [1] http://dosync.posterous.com/illiterate-programming [2] http://lists.squeakfoundation.org/pipermail/squeak-dev/1998-April/009261.ht… -- Janko MivÅ¡ek Aida/Web Smalltalk Web Application Server http://www.aidaweb.si

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[Pharo-project] change pharo image title
by Usman Bhatti Feb. 27, 2012

Feb. 27, 2012

Is there a way to programmatically set the title of a pharo image on startup? I grabbed the first level pasteup morph and tried to play with it but I didn't find the intended method. thanx usman

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