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[Pharo-project] Strange behaviour in Spec
by Andrei Vasile Chis Feb. 5, 2013

Feb. 5, 2013

Hi, While playing with spec I started to have some quite random and strange behaviour. I'll try to explain what happen, because it might be a nasty/not that nasty bug. I had a ListComposableModel and some very simple code like: aListComposableModel whenListChanged: [ :aList | aListComposableModel setSelectedItem: aList first ]. >From time to time this code seem to randomly fail because the selection wasn't set. I manage to reduce the error to the following equivalent code: aListComposableModel whenListChanged: [ :aList | aList = aListComposableModel listItems ]. What happen was that sometimes the list held by the model was the previous list and not the new list, which was actually correctly passes to the block. This seem to be caused by the way ListComposableModel uses announcers to update its internal state. In ListComposableModel>>registerEvents there is the code: listHolder whenChangedDo: [ self refreshListItems ]. This registers an announcement that should clear the cache: ListComposableModel >>refreshListItems listItemsCache := nil. ^ self changed: #listElementAt: In my code by using 'aListComposableModel whenListChanged:' I also register an event that should be executed when the elements of the list change. So by now the listHolder containing the elements of the list has two registered events. The problem is that in order for this to work correctly they have to execute in the order they were added: first invalidate the cache, then the other events registered by the user. However I do not think that announcers guarantee this. So from time to time they execute in the wrong way. This means that the code in the whenListChanged: block will execute in a state in which internaly aListComposableModel still contains the previous list. Does this make sense? Andrei

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[Pharo-project] [update 2.0] #20514 (Zinc Update)
by Marcus Denker Feb. 5, 2013

Feb. 5, 2013

Issue 7375: Zinc Update January 2013 http://code.google.com/p/pharo/issues/detail?id=7375 Sven explains: Since http://code.google.com/p/pharo/issues/detail?id=7180 there were the following changes: - support for server routes (session affinity, sticky sessions) - new API to access the server URL (#url, #serverUrl, #scheme) - ZnResponse class>>#redirect: and #created: now accept absolute URLs as well (thx Jan van de Sandt) - New ZnRequest API (all suggested by Jan van de Sandt): #host to return the Host: header field as ZnUrl #relativeUrl to explicitely request the request line uri as a relative URL #absoluteUrl to combine the request line URL with the host URL into an absolute URL #mergedFields to return a multi value dictionary combining query fields and application url encoded form fields - ZnClient>>#redirectUrl now uses ZnUrl>>#inContextOf: - Reimplemented ZnApplicationUrlEncodedEntity>>#addAll: and ZnHeaders>>#addAll: using ZnMultiValueDictionary>>#addAllMulti: - fix ZnUtils class>>#signalProgress:total: bug when total was nil: #format: index should be 1 not 0 (Thx Camillo Bruni !) - added ZnMessage>>#writeToTranscript - Bugfix to ZnApplicationFormUrlEncodedEntity>>#readFrom: which failed when content-length was not specified (Thx Jan van de Sandt) - Extended ZnClient>>#url: to accept the new user info (username and password) component of ZnUrl when present - ZnRequestLine>>#uri: now explicitely calls #enforceKnownScheme - various refactorings, cleanups - moved ZnMonticelloServerDelegate from Zinc-HTTP-Client-Server to Zinc-FileSystem and Zinc-FileSystem-Legacy - ZnServer's #handleRequestProtected: will now also do a #logServerError unless #logServerDetails is false - this gives exception, signaller context details and a stack trace of depth 8 when an unhandled error occurs - There is also a new package, Zinc-Resource-Meta-FileSystem, containing bidirectional conversions between ZnUrl and FileReference using #asZnUrl and #asFileReference.

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[Pharo-project] Slides Fosdem13 from this morning
by Marcus Denker Feb. 5, 2013

Feb. 5, 2013

Hi, Here are my slides from the talk today at FOSDEM; http://marcusdenker.de/talks/13Fosdem/2013-FOSDEM-Pharo.pdf

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[Pharo-project] Nanosecond-precision DateAndTime?
by Igor Stasenko Feb. 5, 2013

Feb. 5, 2013

Hi, i am maybe completely ignorant, but can someone tell me where such precision is used? In order to achieve this (or well, get close to), a current implementation goes into very long circles to squeeze accuracy from underlying OS & primitives.. just take a look at this code and tell me what you think: secondsWhenClockTicks "waits for the moment when a new second begins" | lastSecond delay | delay := Delay forMilliseconds: 1. lastSecond := self primSecondsClock. [ lastSecond = self primSecondsClock ] whileTrue: [ delay wait ]. ^ lastSecond + 1 initializeOffsets | durationSinceEpoch secondsSinceMidnight nowSecs | LastTick := 0. nowSecs := self clock secondsWhenClockTicks. LastMilliSeconds := self millisecondClockValue. durationSinceEpoch := Duration days: SqueakEpoch hours: 0 minutes: 0 seconds: nowSecs. DaysSinceEpoch := durationSinceEpoch days. secondsSinceMidnight := (durationSinceEpoch - (Duration days: DaysSinceEpoch hours: 0 minutes: 0 seconds: 0)) asSeconds. MilliSecondOffset := secondsSinceMidnight * 1000 - LastMilliSeconds what amuses me is then the way how TimeStamp class dealing with it to actually throw away extra precision: TimeStamp >> current "called by #now" | ts ticks | ts := super now. ticks := ts ticks. ticks at: 3 put: 0. ts ticks: ticks offset: ts offset. ^ ts DateAndTime>>ticks "Private - answer an array with our instance variables. Assumed to be UTC " ^ Array with: julianDayNumber with: seconds with: nanos. if it is not obvious for someone, the right way to reset the nanoseconds field in timestamp is not sending a message to existing timestamp, say #resetNanoseconds, NO! you should call a private method, which answers you an Array and then you do "at:3 put: 0", and then pass it again to same object as two arguments. -- Best regards, Igor Stasenko.

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[Pharo-project] Compiling Cog Jit with Xcode 4.6
by Sean P. DeNigris Feb. 5, 2013

Feb. 5, 2013

The App Store wants me to update. Has anyone been able to successfully compile with Xcode 4.6? Thanks, Sean -- View this message in context: http://forum.world.st/Compiling-Cog-Jit-with-Xcode-4-6-tp4667695.html Sent from the Pharo Smalltalk mailing list archive at Nabble.com.

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[Pharo-project] [update 2.0] #20513
by Marcus Denker Feb. 5, 2013

Feb. 5, 2013

20513 ----- Issue 7417: When future cant wait (fix potential caveat with Delay) http://code.google.com/p/pharo/issues/detail?id=7417 Issue 7419: smartchars broken http://code.google.com/p/pharo/issues/detail?id=7419 Issue 7418: Put a setting to enable/disable the uncommented class icon http://code.google.com/p/pharo/issues/detail?id=7418 Diff information: http://ss3.gemstone.com/ss/Pharo20/Nautilus-MarcusDenker.409.diff http://ss3.gemstone.com/ss/Pharo20/NECompletion-MarcusDenker.85.diff http://ss3.gemstone.com/ss/Pharo20/Kernel-MarcusDenker.1302.diff

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[Pharo-project] pharo-contribution CI server
by Camillo Bruni Feb. 5, 2013

Feb. 5, 2013

I just create a new jenkins instance https://ci.inria.fr/pharo-contribution/ The goal is to keep https://ci.inria.fr/pharo as clean and green as possible. Everything that is experimental and not explicitly supported by the pharo code team should go to the pharo-contribution server. I hope to finish the setup this evening. best cami

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[Pharo-project] Monkey noise in IssueTracker
by Ben Coman Feb. 4, 2013

Feb. 4, 2013

Since I am not involved in integrating issues and I'm not sure how all the info added to the Issue Tracker y the Monkey is used, this is just a general observation. While it is nice to see the Monkey recording of its work in the Issue Tracker (it gives a professional feel), I am wondering whether "on success" it could be a bit more concise. Perhaps it could list only failed test packages, or not put a newline after each package. For example, http://code.google.com/p/pharo/issues/detail?id=6603 has had three successful runs in the last 26 hours. Also btw,https://git.gitorious.org/cogvm/blessed.git gives a 404 Not Found error. cheers -ben

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[Pharo-project] [update 2.0] #20512
by Marcus Denker Feb. 4, 2013

Feb. 4, 2013

20512 ----- Issue 7361: endless Cancel in discard What do you want to do? http://code.google.com/p/pharo/issues/detail?id=7361 Issue 7416: #compilerClass on behaviors should return Smalltalk>>#compilerClass http://code.google.com/p/pharo/issues/detail?id=7416 Diff information: http://ss3.gemstone.com/ss/Pharo20/Polymorph-Widgets-MarcusDenker.767.diff http://ss3.gemstone.com/ss/Pharo20/Nautilus-MarcusDenker.408.diff http://ss3.gemstone.com/ss/Pharo20/Compiler-MarcusDenker.373.diff

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[Pharo-project] [update 2.0] #20511
by Marcus Denker Feb. 4, 2013

Feb. 4, 2013

20511 ----- Issue 7414: Make the default compiler a class var in SmalltalkImage http://code.google.com/p/pharo/issues/detail?id=7414 Diff information: http://ss3.gemstone.com/ss/Pharo20/System-Support-MarcusDenker.771.diff

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