November 2011 - Pharo-users

Load package without warnings

by Francois Stephany

Hi list, Is there a way to load packages without having to click 'Proceed' when you get warnings ? I'd like to add CommandShell in a metacello configuration loaded on a headless server... Cheers, Francois

Nov. 8, 2011

OOP: Managing a time-consuming model action from the UI

by Sean P. DeNigris

I'm creating a media library service in Pharo. I have a DVDMorph class, with DVD as a model. One feature is to cache a DVD locally as a compressed disk image, which usually takes about 5 minutes. The ways I thought of were: 1. use announcements 2. pass blocks for updating and cancelling 3. immediately return some kind of DiskImageProxy that would stand in for the DiskImage until processing was done, and then replace (maybe with become?). I chose #2 because it seemed the easiest for my simple needs (I don't need multiple views); but it definitely made the API uglier, as I have to pass the update and cancel blocks through 3-4 methods. What do you think would be the best approach? Here's a simplified version of what I wrote (not refactored)... DVDMorph>>cache updateBlock := [ :progress | WorldState addDeferredUIMessage: [ progressMorph contents: progress asString ] ]. [ self dvd cacheUpdating: updateBlock cancelIf: [ self shouldCancel ] ] forkAt: Processor userBackgroundPriority. DVD>>cacheUpdating: aBlock cancelIf: cancelPredicate Resources library importAs: imageFileName after: [ :fileReference | CreateDiskImage from: self deviceFile to: fileReference updating: aBlock cancelIf: cancelPredicate. diskImage := fileReference ]. CreateDiskImage >>from:to:updating:cancelIf: process := PipeableOSProcess command: 'hdiutil create -srcfolder ', from, ' ', to. [ process isComplete ] whileFalse: [ self shouldCancel ifTrue: [ process processProxy sigint. ^ self ]. self updateStatus. (Delay forSeconds: 1) wait ] Thanks. Sean -- View this message in context: http://forum.world.st/OOP-Managing-a-time-consuming-model-action-from-the-U… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Nov. 6, 2011

Adding a context menu to a Morph

by Sean P. DeNigris

I added instructions to the online book... http://book.pharo-project.org/book/LanguageAndLibraries/GUI/contextmenus Sean -- View this message in context: http://forum.world.st/Adding-a-context-menu-to-a-Morph-tp3991117p3991117.ht… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Nov. 4, 2011

Re: [Pharo-users] Creating a FSReference

by Sean P. DeNigris

The more I play with FS, which is quite awesome, the more I'm wishing for an easier way to create an FSReference. I'm particularly confused by the resolve semantics. Consider the following attempts to create an FSReference from a path string: * FSFilesystem disk root resolve: '/path/to/file.ext'. -> a valid FSReference * FSFilesystem disk resolve: '/path/to/file.ext'. -> anFSAbsolutePath * FSReference / 'path/to/file.ext' -> an invalid FSReference (self exists -> false) -- View this message in context: http://forum.world.st/Creating-a-FSReference-tp3962401p3986431.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Nov. 3, 2011

Re: [Pharo-users] [Pharo-project] Brainstorming on the roadmap for first Pharo Consortium Engineer :)

by StÃ©phane Ducasse

Yes this is a long overdue. We will start another pass on it with nick in a week. So we will see: we want to have all the compilation chain to work in an environment. Stef > >> Now the free items with probably igor involvement >> - Multiwindowing support >> - Fully working multithreaded FFI with ***Documentation*** >> - Filesystem fix and integration >> - Integration of OPAL >> - RPackage integration > > I like to add environments so we can have multiple versions in the same image and get rid of default global state. I think you have that already on your mind even with separate object memories. > > Norbert >

Nov. 3, 2011

Re: [Pharo-users] Enhancing SequenceableCollection>>combinationsAt:in:after:do:

by StÃ©phane Ducasse

Thanks can you propose some tests? Did you sign the license agreement? Stef On Nov 2, 2011, at 7:57 PM, Runar Jordahl wrote: > In Pharo 1.3, SequenceableCollection>>combinations:atATimeDo: will, > for all combinations, send the same collection instance as argument > for the block. Therefore, if you use this collection itself, you will > be surprised: > > |answer| > answer := OrderedCollection new. > #(a b c) combinations: 2 atATimeDo: [:each | answer add: each]. > answer > > Here I expect to end up with a collection looking like this: > 1: #(#a #b) > 2: #(#a #c) > 3: #(#b #c) > > But I end up with: > 1: #(#c #c) > 2: #(#c #c) > 3: #(#c #c) > > One fix is to change the client code to copy the argument for the block: > |answer| > answer := OrderedCollection new. > #(a b c) combinations: 2 atATimeDo: [:each | answer add: each copy]. > answer > > Another solution is enhancing > SequenceableCollection>>combinationsAt:in:after:do: to copy the > collection: > nn + 1 to: self size do: [ :index | > aCollection at: jj put: (self at: index). > jj = aCollection size > ifTrue: [ aBlock value: aCollection copy ] > ifFalse: [ > self > combinationsAt: jj + 1 > in: aCollection > after: index > do: aBlock ] ] > > > > Kind regards > Runar Jordahl > blog.epigent.com >

Nov. 3, 2011

Enhancing SequenceableCollection>>combinationsAt:in:after:do:

by Runar Jordahl

In Pharo 1.3, SequenceableCollection>>combinations:atATimeDo: will, for all combinations, send the same collection instance as argument for the block. Therefore, if you use this collection itself, you will be surprised: |answer| answer := OrderedCollection new. #(a b c) combinations: 2 atATimeDo: [:each | answer add: each]. answer Here I expect to end up with a collection looking like this: 1: #(#a #b) 2: #(#a #c) 3: #(#b #c) But I end up with: 1: #(#c #c) 2: #(#c #c) 3: #(#c #c) One fix is to change the client code to copy the argument for the block: |answer| answer := OrderedCollection new. #(a b c) combinations: 2 atATimeDo: [:each | answer add: each copy]. answer Another solution is enhancing SequenceableCollection>>combinationsAt:in:after:do: to copy the collection: nn + 1 to: self size do: [ :index | aCollection at: jj put: (self at: index). jj = aCollection size ifTrue: [ aBlock value: aCollection copy ] ifFalse: [ self combinationsAt: jj + 1 in: aCollection after: index do: aBlock ] ] Kind regards Runar Jordahl blog.epigent.com

Nov. 2, 2011

Re: [Pharo-users] [pharo-users] Can't Load Magma in Pharo 1.3

by Panu Suominen

2011/11/2 Panu Suominen <panu.suominen(a)iki.fi>: > But I can't get Magma to work with Pharo-1.3-13315. Actually I have to take this back a little bit. At least local repository seem to be working at least in simple cases. I have larger project where storing/loading objects does not seem to work. There seem to be some kind of conflicts between projects I load and Magma. Have not yet figure out what those are but if I found any I report them. -- Panu

Nov. 2, 2011

Re: [Pharo-users] [pharo-users] Can't Load Magma in Pharo 1.3

by Panu Suominen

I think this problem relates OmniBrowser. Loading #stable to earlier Pharo-1.3 image things broke big time. With current Pharo-1.3-13315 things seems to be fine. Seaside and MetacelloBrowser among others ignited loading of OmniBrowser stable which caused loading of some non-working changes. But I can't get Magma to work with Pharo-1.3-13315. It does load (if OSProcess 4.4.5 is loaded before) but storing and loading objects does not seem to work in all cases. Maybe these are the known issues reported in http://lists.gforge.inria.fr/pipermail/pharo-project/2011-April/047898.html. 2011/10/25 Ankur Sethi <get.me.ankur(a)gmail.com>: > Hi Stef, > > On Tue, Oct 25, 2011 at 12:33 AM, StÃ©phane Ducasse > <stephane.ducasse(a)inria.fr> wrote: >> Welcome ankhur >> >> we are sorry that you encounter problems. >> > > Even with these issues, Pharo is probably the most fun I've had with a > programming language (environment?) in a long time :) > > I'll try asking about the syntax highlighting thing on the Seaside ML. > > (PS: is "Ankhur" a common name somewhere? You're the second person to > call me that this month.) > > -- > Ankur Sethi > (GeneralMaximus on IRC and elsewhere) > > -- Panu

Nov. 2, 2011

Re: [Pharo-users] Creating a FSReference

by Sean P. DeNigris

Luc Fabresse wrote: > > I guess those ones also make it: > FSFilesystem disk root / 'dev' > (FSPath / 'dev') asReference > Thanks, Luc. The reason I didn't use either of those is that I had an absolute path string, and using either with '/dev' instead of 'dev' produces '//dev' as a result. Sean -- View this message in context: http://forum.world.st/Creating-a-FSReference-tp3962401p3973197.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Nov. 2, 2011