Squeak-dev July 2012

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55 participants
189 discussions

Parameterised paths for Altitude?
by Frank Shearar 28 Jul '12

28 Jul '12

Hi Colin, I'm playing around with Altitude, making something that can reflect on an image. So for instance I have in my main ALApplication subclass #(hash value) do: [:sym | locator at: ALPath root / 'senders-of' / sym asString put: (SendersOf reflecting: sym) asResource] but I'd really rather have something like this Sinatra snippet: get '/senders-of/:name' { |n| # Get the senders of :name } I can't find any Locators like that, so perhaps it's not something you've needed? frank

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Delimited dynamic bindings
by Frank Shearar 27 Jul '12

27 Jul '12

I think I've mentioned once or twice the fact that dynamic variables and partial continuations do not play nicely with each other. [1] I haven't, however, formally announced any _implementation_ of same. So without further ado, go take a look at http://ss3.gemstone.com/ss/Control.html which now ships with partial-continuation-friendly delimited dynamic variables! "Delimited dynamic variables are easy to instantiate:" d := DelimitedDynamicVariable default: 0. "They don't pollute your namespace unless you explicitly want to:" MyDynamicVariable := d. "<-- often not necessary, but forced on one by DynamicVariable" "You can reset their root/initial value:" d dset: 1. "You can query their current value:" d dref. "=> 1" "You can alter their state within a block:" d dlet: 2 in: [ d dref. "=> "2" ] d dref. "=> 1" "You can set multiple variables at a time:" p := DelimitedDynamicVariable default: 0. d, p dset: #(10 20). {d dref. p dref.} "=> #(10 20)" "And, of course, for just one block:" d, p dlet: #(3 4) in: [ {d dref. p dref.} "=> #(3 4)" ] Why use delimited dynamic variables? You probably already are: [self someStuff] on: AnExceptionClass do: [:ex | ex resume: 1] So... why use DelimitedDynamicVariables? You don't have to waste a class name on them. For a variable that's not used outside of a class, that means the use thereof is invisible, as it should be. frank [1] http://www.lshift.net/blog/2012/06/27/resumable-exceptions-can-macro-expres…

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First Environment bug report!
by Frank Shearar 27 Jul '12

27 Jul '12

Try evaluate "Timestamp now" and you'll see an MNU because Environment doesNotUnderstand: #keysDo:. It's not a general problem because "Number readFrom: '1'" works as expected. Oh, that's because I should evaluate TimeStamp, not Timestamp. So this is something triggered by an UndeclaredVariable, where the Parser's trying to correct a misspelling. The process hits Class >> #possibleVariablesFor:continuedFrom: and borks because "self environment" is insufficiently Dictionary-like. The fix is easy enough: add #keysDo: and #associationsDo: to Environment. I'm just writing a test first demonstrating the fix before I commit anything. frank

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The Trunk: Tests-nice.154.mcz
by commits＠source.squeak.org 27 Jul '12

27 Jul '12

Nicolas Cellier uploaded a new version of Tests to project The Trunk: http://source.squeak.org/trunk/Tests-nice.154.mcz ==================== Summary ==================== Name: Tests-nice.154 Author: nice Time: 27 July 2012, 8:14:03.431 pm UUID: fa846130-25ce-4a75-bcee-212b658a274a Ancestors: Tests-cwp.153 Use a workaround for testBecomeIdentityHash knowing that two objects created consecutively may share same identityHash. =============== Diff against Tests-cwp.153 =============== Item was changed: ----- Method: BecomeTest>>testBecomeIdentityHash (in category 'Testing') ----- testBecomeIdentityHash | a b c d numberOfRetry newAIdentityHash newBIdentityHash oldAIdentityHash oldBIdentityHash | numberOfRetry := 0. [a := 'ab' copy. + c := IdentitySet new: 1000. b := 'cd' copy. + d := IdentitySet new: 1000. "Note: the sets are allocated with enough room to reduce probability that two different hash lead to same slot" + "Note2: a & b creation are interleaved with c & d, because some VM allocate the same identityHash for two consecutively created objects" + c add: a; add: b. + d add: a. - (c := IdentitySet new: 1000) add: a; add: b. - (d := IdentitySet new: 1000) add: a. oldAIdentityHash := a identityHash. oldBIdentityHash := b identityHash. oldAIdentityHash = oldBIdentityHash and: [numberOfRetry < 10]] whileTrue: [numberOfRetry := numberOfRetry + 1]. self assert: oldAIdentityHash ~= oldBIdentityHash description: 'The VM is spawning too many equal identityHash to be honest'. a become: b. newAIdentityHash := a identityHash. newBIdentityHash := b identityHash. self "The set c & d can still retrieve their elements because elements did not change their expected position" assert: (c includes: a); assert: (c includes: b); assert: (d includes: a); deny: (d includes: b); "Elements didn't change their expected position because identityHash did not change" assert: oldAIdentityHash = newAIdentityHash; assert: oldBIdentityHash = newBIdentityHash!

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RE: [Box-Admins] To Ken ...
by Ken Causey 27 Jul '12

27 Jul '12

8) Thanks and you are welcome, mostly... ;) Ken > -------- Original Message -------- > Subject: [Box-Admins] To Ken ... > From: Bert Freudenberg <bert(a)freudenbergs.de> > Date: Fri, July 27, 2012 11:34 am > To: Squeak Hosting Support <box-admins(a)lists.squeakfoundation.org> > Cc: The general-purpose Squeak developers list > <squeak-dev(a)lists.squeakfoundation.org> > > > ... and his box-admin team a big THANK YOU! (*) > > http://www.youtube.com/watch?v=FE_p5N89XQI > :) > > - Bert - > > (*) Last Friday in July is System Administrator Appreciation Day

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The Trunk: Environments-fbs.3.mcz
by commits＠source.squeak.org 27 Jul '12

27 Jul '12

Colin Putney uploaded a new version of Environments to project The Trunk: http://source.squeak.org/trunk/Environments-fbs.3.mcz ==================== Summary ==================== Name: Environments-fbs.3 Author: fbs Time: 27 July 2012, 3:45:30.98 pm UUID: f4f0bbda-663d-407b-8dbd-976eb031d247 Ancestors: Environments-cwp.2 Using a Workspace, if you misspell a classname you get a walkback because Environment doesn't understand #keysDo:. Implementing it results in the desired spelling correction prompt. =============== Diff against Environments-cwp.2 =============== Item was added: + ----- Method: Environment>>keysDo: (in category 'enumerating') ----- + keysDo: aBlock + "Evaluate aBlock for each of the receiver's keys." + + contents keysDo: aBlock!

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Re: [squeak-dev] The Inbox: Environments-fbs.3.mcz
by Frank Shearar 27 Jul '12

27 Jul '12

On 27 July 2012 15:45, <commits(a)source.squeak.org> wrote: > Frank Shearar uploaded a new version of Environments to project The Inbox: > http://source.squeak.org/inbox/Environments-fbs.3.mcz > > ==================== Summary ==================== > > Name: Environments-fbs.3 > Author: fbs > Time: 27 July 2012, 3:45:30.98 pm > UUID: f4f0bbda-663d-407b-8dbd-976eb031d247 > Ancestors: Environments-cwp.2 > > Using a Workspace, if you misspell a classname you get a walkback because Environment doesn't understand #keysDo:. Implementing it results in the desired spelling correction prompt. > > =============== Diff against Environments-cwp.2 =============== > > Item was added: > + ----- Method: Environment>>keysDo: (in category 'enumerating') ----- > + keysDo: aBlock > + "Evaluate aBlock for each of the receiver's keys." > + > + contents keysDo: aBlock! I'm struggling to write a test for this. I thought this would work: testLookupOfMisspelledClassNamePromptsUser | griffle | self createClass: #Griffle. griffle := env at: #Griffle. self should: [griffle compile: 'nowTime ^ TimStamp new'] raise: UndeclaredVariable. but it doesn't. First it fails because there's no UndeclaredVariable, but the second time it runs, even though env at: #TimStamp is KeyNotFound, inspecting the env and evaluating "TimStamp" yields nil. That's fine if you're in a WorkSpace, which will automatically create bindings for you, but not so much here. Or am I misreading my test failure? Could an inspector autocreate the binding? Even though the env's undeclared is empty, the root environment's contains #TimStamp->nil. frank

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The Inbox: Environments-fbs.3.mcz
by commits＠source.squeak.org 27 Jul '12

27 Jul '12

Frank Shearar uploaded a new version of Environments to project The Inbox: http://source.squeak.org/inbox/Environments-fbs.3.mcz ==================== Summary ==================== Name: Environments-fbs.3 Author: fbs Time: 27 July 2012, 3:45:30.98 pm UUID: f4f0bbda-663d-407b-8dbd-976eb031d247 Ancestors: Environments-cwp.2 Using a Workspace, if you misspell a classname you get a walkback because Environment doesn't understand #keysDo:. Implementing it results in the desired spelling correction prompt. =============== Diff against Environments-cwp.2 =============== Item was added: + ----- Method: Environment>>keysDo: (in category 'enumerating') ----- + keysDo: aBlock + "Evaluate aBlock for each of the receiver's keys." + + contents keysDo: aBlock!

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XTHash fails to find libcrypto in Linux / Altitude only on Win32?
by Chris Cunnington 27 Jul '12

27 Jul '12

Of course, I meant "Virtualbox", not Visualbox. Sigh. The weekend will be here soon, I hope. Chris

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Re: [squeak-dev] The Trunk: Tests-cwp.153.mcz
by Frank Shearar 27 Jul '12

27 Jul '12

On 27 July 2012 07:58, <commits(a)source.squeak.org> wrote: > Colin Putney uploaded a new version of Tests to project The Trunk: > http://source.squeak.org/trunk/Tests-cwp.153.mcz > > ==================== Summary ==================== > > Name: Tests-cwp.153 > Author: cwp > Time: 26 July 2012, 11:57:32.466 pm > UUID: a0416b69-6b69-43f7-8ba9-63186a143c67 > Ancestors: Tests-bf.152, Tests-cwp.150 > > merge > > Introduce EnvironmentTest. > > =============== Diff against Tests-bf.152 =============== Cool. I just ran the full suite of tests and we have no regressions (in the sense that the tests I mentioned the other day still fail, but no new ones fail). Yay! frank

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