Squeak-dev December 2013

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45 participants
325 discussions

Catching up to the 80s
by Frank Shearar 28 Dec '13

28 Dec '13

http://peaker.github.io/lamdu/ It's an IDE for Haskell that aims to bring to Haskell programmers what we've enjoyed for ages. There might be some things in there that we don't do yet, that might be worth "borrowing". We don't have a real structural editor, for instance. Not a trivial piece of work either, mind you. It's obviously (Haskell!) centred around leveraging the benefits of functional programming. Smalltalk traditionally doesn't use functional techniques (referential transparency, I'm looking at you), and so side effects cause a drastic deviation from some of the techniques lamdu will be able to use. Anyway, it's nice to see the ideas spreading. Please take a look, and see if you can see anything we can borrow! frank

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Re: [squeak-dev] The Trunk: Environments-cmm.39.mcz
by Frank Shearar 27 Dec '13

27 Dec '13

On 25 December 2013 04:03, <commits(a)source.squeak.org> wrote: > Chris Muller uploaded a new version of Environments to project The Trunk: > http://source.squeak.org/trunk/Environments-cmm.39.mcz > > ==================== Summary ==================== > > Name: Environments-cmm.39 > Author: cmm > Time: 24 December 2013, 10:03:31.308 pm > UUID: 907f54ac-0b7b-41ac-b6be-8330fb6a1b12 > Ancestors: Environments-cmm.38 > > The community voted for Environments to keep its original Designated Initializers. > > =============== Diff against Environments-cmm.38 =============== Thanks, Chris! frank

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FFI or Alien
by marcelo Cortez 27 Dec '13

27 Dec '13

Hi I'm trying to develop support for FFI in pi, which is better support library FFI or Alien, which are the differences best jmdc

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Seaside
by Tobias Pape 27 Dec '13

27 Dec '13

Hi all, Now that Seaside 3.1 is released, Is there any interest in me providing another Squeak/Seaside image? Best -Tobias

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Fwd: [Seaside-dev] [Seaside] [ANN] Seaside 3.1 and 3.0.10 release
by Tobias Pape 27 Dec '13

27 Dec '13

FYI Begin forwarded message: > From: Philippe Marschall <philippe.marschall(a)gmail.com> > Subject: [Seaside-dev] [Seaside] [ANN] Seaside 3.1 and 3.0.10 release > Date: 27. Dezember 2013 11:57:11 MEZ > To: Seaside - developer list <seaside-dev(a)lists.squeakfoundation.org>, Seaside - general discussion <seaside(a)lists.squeakfoundation.org>, Pharo Project <pharo-project(a)lists.gforge.inria.fr> > Reply-To: Seaside - developer list <seaside-dev(a)lists.squeakfoundation.org> > Delivered-To: list-seaside-dev(a)lists.squeakfoundation.org > > We are pleased to announce the releases of Seaside 3.1 and 3.0.10. > Seaside 3.1 is a feature release and contains a range of improvements > and fixes from a variety of people. Seaside 3.0.10 is a minor release > of Seaside 3.0 containing only a single bug fix. > > The changes can be view here: > http://code.google.com/p/seaside/wiki/Seaside310Changelog and here: > http://code.google.com/p/seaside/wiki/Seaside3010Changelog > > A one-click image is available here: > http://www.seaside.st/distributions/Seaside-3.1-OneClick.zip and here: > http://www.seaside.st/distributions/Seaside-3.0.10-OneClick.zip > Mavericks user beware the one click images are not signed. > > Seaside's Metacello configuration has been updated, so Seaside 3.1 can > be loaded into Pharo with: > > Gofer new > url:'http://www.smalltalkhub.com/mc/Seaside/MetacelloConfigurations/main'; > package: 'ConfigurationOfSeaside3'; > load. > ((Smalltalk at: #ConfigurationOfSeaside3) project version: #stable) load. > > For more control over what gets loaded check out the class comment of > ConfigurationOfSeaside3 that lists the supported groups. > > We would like to thank everybody who contributed to these releases. > > The Seaside Team > _______________________________________________ > seaside-dev mailing list > seaside-dev(a)lists.squeakfoundation.org > http://lists.squeakfoundation.org/mailman/listinfo/seaside-dev

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Why Color rgb components are on 10 bits?
by Nicolas Cellier 26 Dec '13

26 Dec '13

I know the answer, we have 30 bits available for keeping the rgb instance variable as SmallInteger... So it's the best we can do, while keeping an efficient format. But we are never using 10 bits for each component, for 32 bits image only 8 bit by color are used. Since nowadays most Forms are 32 bits deep, this force useless conversions where we could have none. I see that Pharo 3.0 did unify Color and TranslucentColor by moving the alpha information in Color. But did not change the rgb ComponentMax... Any reason why? If we encoded rgb component on 8 bits, and reverted the alpha channel encoding, then we could have colors pre-encoded on 32 bits, but most using only 24 bits (because most are opaque) would be represented as SmallInteger. But I don't know if it is really inter-operable, or more natural... Juan followed another path for Cuis, opting for float components, which is another possibility, but our VM are not yet optimized for handling Floats... Thoughts?

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Daily Commit Log
by commits＠source.squeak.org 26 Dec '13

26 Dec '13

Changes to Trunk (http://source.squeak.org/trunk.html) in the last 24 hours: http://lists.squeakfoundation.org/pipermail/packages/2013-December/006810.h… Name: Environments-cmm.39 Ancestors: Environments-cmm.38 The community voted for Environments to keep its original Designated Initializers. ============================================= http://lists.squeakfoundation.org/pipermail/packages/2013-December/006811.h… Name: Balloon-nice.24 Ancestors: Balloon-eem.23 Change a few print:(aFloat roundTo: 0.01) into nextPutAll:(aFloat printShowingMaxDecimalPlaces: 2) or print:aFloat maxDecimalPlaces:2 Indeed, decimal fraction (1/10) (1/100) ... are not represented exactly as Float. (1/10 - 0.1 asTrueFraction) asFloat -> -5.551115123125783e-18 So roundTo: 0.01 is an approximation which cumulates several round off errors and differs from intention (roundTo:1/100) asFloat. Now that we print number accurately (*), this small difference causes unwanted trailing digits. Examples: 0.3 printString-> '0.3' (3*0.1) printString-> '0.30000000000000004' (0.3 roundTo: 0.1) printString -> '0.30000000000000004' * accurately = the shorter decimal fraction that would be re-interpreted unchanged ============================================= http://lists.squeakfoundation.org/pipermail/packages/2013-December/006812.h… Name: GetText-nice.34 Ancestors: GetText-fbs.33 Change a few print:(aFloat roundTo: 0.01) into nextPutAll:(aFloat printShowingMaxDecimalPlaces: 2) ============================================= http://lists.squeakfoundation.org/pipermail/packages/2013-December/006813.h… Name: Morphic-nice.709 Ancestors: Morphic-nice.708 Change a few print:(aFloat roundTo: 0.01) into nextPutAll:(aFloat printShowingMaxDecimalPlaces: 2) ============================================= http://lists.squeakfoundation.org/pipermail/packages/2013-December/006814.h… Name: MorphicExtras-nice.145 Ancestors: MorphicExtras-nice.144 Change a few print:(aFloat roundTo: 0.01) into nextPutAll:(aFloat printShowingMaxDecimalPlaces: 2) ============================================= http://lists.squeakfoundation.org/pipermail/packages/2013-December/006815.h… Name: Nebraska-nice.36 Ancestors: Nebraska-ul.35 Change a few print:(aFloat roundTo: 0.01) into nextPutAll:(aFloat printShowingMaxDecimalPlaces: 2) ============================================= http://lists.squeakfoundation.org/pipermail/packages/2013-December/006816.h… Name: Network-nice.150 Ancestors: Network-nice.149 Change a few print:(aFloat roundTo: 0.01) into nextPutAll:(aFloat printShowingMaxDecimalPlaces: 2) ============================================= http://lists.squeakfoundation.org/pipermail/packages/2013-December/006817.h… Name: SmallLand-ColorTheme-nice.4 Ancestors: SmallLand-ColorTheme-fbs.3 Change a few print:(aFloat roundTo: 0.01) into nextPutAll:(aFloat printShowingMaxDecimalPlaces: 2) ============================================= http://lists.squeakfoundation.org/pipermail/packages/2013-December/006818.h… Name: Sound-nice.38 Ancestors: Sound-fbs.37 Change a few print:(aFloat roundTo: 0.01) into nextPutAll:(aFloat printShowingMaxDecimalPlaces: 2) ============================================= http://lists.squeakfoundation.org/pipermail/packages/2013-December/006819.h… Name: SmallLand-ColorTheme-nice.5 Ancestors: SmallLand-ColorTheme-nice.4 Change a few print:(aFloat roundTo: 0.01) into nextPutAll:(aFloat printShowingMaxDecimalPlaces: 2) BIS, sorry for the noise. ============================================= http://lists.squeakfoundation.org/pipermail/packages/2013-December/006820.h… Name: System-nice.647 Ancestors: System-cmm.646 Change a few print:(aFloat roundTo: 0.01) into nextPutAll:(aFloat printShowingMaxDecimalPlaces: 2) ============================================= http://lists.squeakfoundation.org/pipermail/packages/2013-December/006821.h… Name: Graphics-nice.284 Ancestors: Graphics-nice.283 Change a few print:(aFloat roundTo: 0.01) into nextPutAll:(aFloat printShowingMaxDecimalPlaces: 2) =============================================

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The Trunk: Graphics-nice.284.mcz
by commits＠source.squeak.org 25 Dec '13

25 Dec '13

Nicolas Cellier uploaded a new version of Graphics to project The Trunk: http://source.squeak.org/trunk/Graphics-nice.284.mcz ==================== Summary ==================== Name: Graphics-nice.284 Author: nice Time: 25 December 2013, 11:44:17.153 pm UUID: 774db86d-773e-4cb5-aee0-bdf1f35f9c29 Ancestors: Graphics-nice.283 Change a few print:(aFloat roundTo: 0.01) into nextPutAll:(aFloat printShowingMaxDecimalPlaces: 2) =============== Diff against Graphics-nice.283 =============== Item was changed: ----- Method: TranslucentColor>>storeArrayValuesOn: (in category 'printing') ----- storeArrayValuesOn: aStream self isTransparent ifTrue: [ ^ aStream space]. super storeArrayValuesOn: aStream. + aStream + space; + print: self alpha maxDecimalPlaces: 3.! - - aStream space. - (self alpha roundTo: 0.001) storeOn: aStream. - - !

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The Trunk: System-nice.647.mcz
by commits＠source.squeak.org 25 Dec '13

25 Dec '13

Nicolas Cellier uploaded a new version of System to project The Trunk: http://source.squeak.org/trunk/System-nice.647.mcz ==================== Summary ==================== Name: System-nice.647 Author: nice Time: 25 December 2013, 11:31:22.289 pm UUID: ca6615b3-c0ba-4d80-96b5-c4f62537ea0f Ancestors: System-cmm.646 Change a few print:(aFloat roundTo: 0.01) into nextPutAll:(aFloat printShowingMaxDecimalPlaces: 2) =============== Diff against System-cmm.646 =============== Item was changed: ----- Method: MessageTally class>>tallySendsTo:inBlock:showTree: (in category 'spying') ----- tallySendsTo: receiver inBlock: aBlock showTree: treeOption " MessageTally tallySends: [3.14159 printString] " "This method uses the simulator to count the number of calls on each method invoked in evaluating aBlock. If receiver is not nil, then only sends to that receiver are tallied. Results are presented as leaves, sorted by frequency, preceded, optionally, by the whole tree." | prev tallies startTime totalTime | startTime := Time millisecondClockValue. tallies := MessageTally new class: aBlock receiver class method: aBlock method. tallies reportOtherProcesses: true. "Do NOT filter nodes with nil process" prev := aBlock. thisContext sender runSimulated: aBlock contextAtEachStep: [ :current | current == prev ifFalse: [ "call or return" prev sender == nil ifFalse: [ "call only" (receiver == nil or: [ current receiver == receiver ]) ifTrue: [ tallies tally: current by: 1 ] ]. prev := current ] ]. + totalTime := Time millisecondClockValue - startTime // 1000.0. - totalTime := Time millisecondClockValue - startTime // 1000.0 roundTo: 0.01. (StringHolder new contents: (String streamContents: [:s | + s nextPutAll: 'This simulation took ' , (totalTime printShowingMaxDecimalPlaces: 2) - s nextPutAll: 'This simulation took ' , totalTime printString , ' seconds.'; cr. treeOption ifTrue: [ tallies fullPrintExactOn: s ] ifFalse: [ tallies leavesPrintExactOn: s ] ])) openLabel: 'Spy Results'! Item was changed: ----- Method: PowerManagement class>>itsyVoltage (in category 'computing') ----- itsyVoltage "On the Itsy, answer the approximate Vcc voltage. The Itsy will shut itself down when this value reaches 2.0 volts. This method allows one to build a readout of the current battery condition." | n | n := Smalltalk getSystemAttribute: 1200. n ifNil: [^ 'no voltage attribute']. + ^ (n asNumber / 150.0 printShowingMaxDecimalPlaces: 2) , ' volts'! - ^ (n asNumber / 150.0 roundTo: 0.01) asString , ' volts'!

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The Trunk: SmallLand-ColorTheme-nice.5.mcz
by commits＠source.squeak.org 25 Dec '13

25 Dec '13

Nicolas Cellier uploaded a new version of SmallLand-ColorTheme to project The Trunk: http://source.squeak.org/trunk/SmallLand-ColorTheme-nice.5.mcz ==================== Summary ==================== Name: SmallLand-ColorTheme-nice.5 Author: nice Time: 25 December 2013, 11:29:31.632 pm UUID: fecc0c3f-d3c5-47cd-981d-1f8bfd1db692 Ancestors: SmallLand-ColorTheme-nice.4 Change a few print:(aFloat roundTo: 0.01) into nextPutAll:(aFloat printShowingMaxDecimalPlaces: 2) BIS, sorry for the noise. =============== Diff against SmallLand-ColorTheme-nice.4 =============== Item was changed: ----- Method: SmallLandColorTheme>>labelForColor: (in category 'private - colors') ----- labelForColor: aColor + ^ (aColor red printShowingMaxDecimalPlaces: 2) , ' ' , (aColor green printShowingMaxDecimalPlaces: 2) , ' ' , (aColor blue printShowingMaxDecimalPlaces: 2)! - ^ (aColor red printShowingMaxDecimalPlaces: 2) asString , ' ' , (aColor green printShowingMaxDecimalPlaces: 2) asString , ' ' , (aColor blue printShowingMaxDecimalPlaces: 2) asString!

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