- Pharo-dev - lists.pharo.org

MacroRecorder updates (+ another demo)
by Gustavo Santos Dec. 17, 2015

Dec. 17, 2015

Hello guys, thanks for the support so far. I've been working on your suggestions. Some of them concerned that the example in the first demo video was too "magic". :-P So I made another video showing how the developer can manually configure the tool. Take a look: https://youtu.be/3xc3j3PjIYQ ( first demo here: https://youtu.be/gW3l4O-WEGs ) Also, I kindly remind you that I'm interested in usage data: - if you systematically modified code in the past, show me. - if you created a custom transformation with the tool, show me; or - if you had problems using the tool, show me too! :-) Feel free to provide any feedback. Cheers, -- Gustavo Santos http://gustavojss.github.io/

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Re: [Pharo-dev] [squeak-dev] Re: [Cuis] Sorting Unicode strings (Re: [Unicode] collation sequences (Re: Unicode Support))
by Eliot Miranda Dec. 17, 2015

Dec. 17, 2015

Hi Dale, On Thu, Dec 10, 2015 at 12:27 PM, Dale Henrichs < dale.henrichs(a)gemtalksystems.com> wrote: > > > On 12/09/2015 04:31 PM, Levente Uzonyi wrote: > >> On Wed, 9 Dec 2015, Dale Henrichs wrote: >> >> >>> >>> On 12/09/2015 12:44 AM, Stephan Eggermont wrote: >>> >>>> On 08-12-15 22:35, Dale Henrichs wrote: >>>> >>>>> What I meant is that you can't _always_ use the code point for >>>>> collation, i.e., sorting based on the value of code points is not >>>>> always >>>>> correct[1]. >>>>> >>>> >>>> I have given up on universal sorting when I learned that dutch >>>> libraries sorting of author names depends on the country of origin of the >>>> author. So if Jan van Beek is dutch he will be sorted under B, while if >>>> he's belgian under V. I haven't checked what happens if the author >>>> emigrates, or changes nationality... >>>> >>>> Stephan >>>> >>>> Well, with ICU (and GemStone's implementation) you can choose which >>> collator to use (Country specific) at the image level or on a comparison by >>> comparison bases ... for example for an indexed collection (Unicode) >>> Strings, you can choose the collator to use for that particular index ... >>> so while it's true that universal sorter is not possible, it is possible to >>> choose a collator that will satisfy a particlar customer .... >>> >> >> I expect my image to compare strings using the codepoint-based (+language >> tags) lexicographical method, because it's simple, deterministic and fast. >> Imagine having failing tests just because your image uses different >> default comparison methods based on some (external) parameter... >> It's also a nightmare to find out why your program is slow on some >> machine, while it's fast on another. >> > > When we implemented the Unicode support in GemStone we preserved the > legacy string classes and their legacy behavior ... We added new Unicode* > classes with the new collator-based behavior for sorting and comparison ... > That way legacy applications (and legacy) tests were not impacted by the > choice of collator ... And folks could choose whether or not their > application would benefit by the use of the new Unicode* classes.... > > The ICU library performance is actually comparable to our original > implementations, so there isn't a noticeable performance difference - we > built the support into our vm and if folks are interested in some of the > gory technical details, we'd be willing to share our experience, as there > are several things that we did to minimize potential performance impacts --- > Just so you know, I will dig my heels in as deeply as I am able to prevent the use of C++ libraries in the VM. It destroys the simulator, which is the most important thing we have for VM development productivity. As far as I'm concerned any use of external libraries to implement core functionality kills the VM-in-Smalltalk concept that Squeak (and Pharo) are built upon. So for me it's a non-starter. I hope others agree. _,,,^..^,,,_ best, Eliot

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Raspberry Pi Scratch with GPIO
by Ben Coman Dec. 17, 2015

Dec. 17, 2015

I was just looking to show a friend at work programming for kids on the Raspberry Pi, away from my usual Smalltalk activities at home, and was surprised to find an article mentioning Scratch with GPIO and our very own Tim & Eliot, which I thought I'd share https://www.raspberrypi.org/blog/a-new-version-of-scratch-for-raspberry-pi-… cheers -ben

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AsmJit
by Jan Vrany Dec. 16, 2015

Dec. 16, 2015

Hi guys,Â two queations:Â (i) Is AsmJit going to be developed any more or it's abandoned Â Â as well as native boost? (ii)Where can I find latest AsmJit? I'm properly confused: Â Â * Is is the one in latest Pharo 4.0 (5.0) image? Â Â * Is it the one here:Â http://smalltalkhub.com/#!/~Pharo/AsmJitÂ ? Â Â Â (the one in the image seem to be based on completely disjunct Â Â Â Â set of .mcz than those in the repo above). Best, Jan

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Spur Cog vs VW
by stepharo Dec. 16, 2015

Dec. 16, 2015

Hi guys I would love to know how Spur Cog places itself compared to VW. Stef

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New web tutorial
by stepharo Dec. 16, 2015

Dec. 16, 2015

Hi guys with Olivier Auverlot we did several attempts (over the year) and we are happy to release a first draft of a web tutorial around Pharo. We ask the user to build a simple blog engine. It goes over - Mongo - Seaside - Magritte https://ci.inria.fr/pharo-contribution/job/TinyBlogTutorial/5/artifact/book… Soon Rest/Deployment/Garage?/NeoJSON/XML If you want to participate (translate it to english) or improve it you are welcome. We hope that it will serve as a basis to a lot of Seaside applications. This tutorial will be used in the lecture I'm giving next weeks in Togo and will be edited as a lulu book. Stef and Olivier.

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Error when using Git
by Alexandre Bergel Dec. 16, 2015

Dec. 16, 2015

Hi! I get the following error: Any idea whatâs wrong? Cheers, Alexandre â _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

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[pharo-project/pharo-core]
by GitHub Dec. 16, 2015

Dec. 16, 2015

Branch: refs/tags/50505 Home: https://github.com/pharo-project/pharo-core

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[pharo-project/pharo-core] 48fb68: 50505
by GitHub Dec. 16, 2015

Dec. 16, 2015

Branch: refs/heads/5.0 Home: https://github.com/pharo-project/pharo-core Commit: 48fb68df9024ddf7132306e92cf692f1ec9727d1 https://github.com/pharo-project/pharo-core/commit/48fb68df9024ddf7132306e9… Author: Jenkins Build Server <board(a)pharo-project.org> Date: 2015-12-16 (Wed, 16 Dec 2015) Changed paths: M Kernel-Tests.package/BehaviorTest.class/instance/tests/testCompactAndUncompactClass.st M Kernel-Tests.package/BehaviorTest.class/instance/tests/testUncompactClassNotAllowed.st M Kernel-Tests.package/SizeInMemoryTest.class/instance/tests/testSizeInMemoryCompactClasses.st R ScriptLoader50.package/ScriptLoader.class/instance/pharo - scripts/script50504.st A ScriptLoader50.package/ScriptLoader.class/instance/pharo - scripts/script50505.st R ScriptLoader50.package/ScriptLoader.class/instance/pharo - updates/update50504.st A ScriptLoader50.package/ScriptLoader.class/instance/pharo - updates/update50505.st M ScriptLoader50.package/ScriptLoader.class/instance/public/commentForCurrentUpdate.st A Traits.package/TBehavior.class/instance/testing/isEphemeronClass.st A Traits.package/TBehavior.class/instance/testing/isImmediateClass.st Log Message: ----------- 50505 17254 Object>>#clone method is not categorised https://pharo.fogbugz.com/f/cases/17254 http://files.pharo.org/image/50/50505.zip

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[Pharo-project] Do we have the new primitive?? [WAS] Re: IdentitySet but using #hash rather than #identityHash ?
by Mariano Martinez Peck Dec. 16, 2015

Dec. 16, 2015

> All I can say is that I am impressed by the numbers it is really much >> faster. >> I still don't understand why I send this email with a subject say >> IdentitySet because what I really need is a fast/large IdentityDictionary >> :( Anyway, there's a place where we can use this LargeIdentitySet in Fuel >> I think). >> >> So Levente, you say this is not possible to adapt this for dictionary? >> can >> we contact Eliot to provide such a primitive? >> > > As promised, I uploaded my LargeIdentityDictionary implementation to > http://leves.web.elte.hu/**squeak/**LargeIdentityDictionary.st<http://leves.web.elte.hu/squeak/LargeIdentityDictionary.st>. > The numbers will be a bit worse compared to LargeIdentitySet, because of > the lack of the primitive, but it's still 2-3x faster than other solutions > (IdentityDictionary, PluggableIdentityDictionary, subclassing, etc). I'm > about to propose this primitive with other improvements on the vm-dev list. > > Hi Eliot/Levente. What is the status of this? Do we have already the new primitive? If true, how can we adapt LargeIdentitySet to use such new primitive? Thanks! > > Levente > > >> thanks >> >> On Fri, Dec 16, 2011 at 3:28 PM, Levente Uzonyi <leves(a)elte.hu> wrote: >> >> On Fri, 16 Dec 2011, Henrik Sperre Johansen wrote: >>> >>> On 16.12.2011 03:26, Levente Uzonyi wrote: >>> >>>> >>>> >>>>> How about my numbers? :) >>>>> >>>>> "Preallocate objects, so we won't count gc time." >>>>> n := 1000000. >>>>> objects := Array new: n streamContents: [ :stream | >>>>> n timesRepeat: [ stream nextPut: Object new ] ]. >>>>> >>>>> set := IdentitySet new: n. >>>>> Smalltalk garbageCollect. >>>>> [1 to: n do: [ :i | set add: (objects at: i) ] ] timeToRun. "4949" >>>>> >>>>> set := LargeIdentitySet new. >>>>> Smalltalk garbageCollect. >>>>> [1 to: n do: [ :i | set add: (objects at: i) ] ] timeToRun. "331" >>>>> >>>>> set := (PluggableSet new: n) >>>>> hashBlock: [ :object | object identityHash * 4096 + object class >>>>> identityHash * 64 ]; "Change this to #basicIdentityHash in Pharo" >>>>> equalBlock: [ :a :b | a == b ]; >>>>> yourself. >>>>> Smalltalk garbageCollect. >>>>> [1 to: n do: [ :i | set add: (objects at: i) ] ] timeToRun. "5511" >>>>> >>>>> >>>>> I also have a LargeIdentityDictionary, which is relatively fast, but >>>>> not >>>>> as fast as LargeIdentitySet, because (for some unknown reason) we don't >>>>> have a primitive that could support it. If we had a primitive like >>>>> primitive 132 which would return the index of the element if found or >>>>> 0 if >>>>> not, then we could have a really fast LargeIdentityDictionary. >>>>> >>>>> >>>>> Levente >>>>> >>>>> Hehe yes, if writing a version fully exploiting the limited range, >>>> that's >>>> probably the approach I would go for as well. >>>> (IAssuming it's the version at http://leves.web.elte.hu/** >>>> squeak/LargeIdentitySet.st<htt**p://leves.web.elte.hu/squeak/** >>>> LargeIdentitySet.st<http://leves.web.elte.hu/squeak/LargeIdentitySet.st> >>>> > >>>> ) >>>> >>>> Mariano commented in the version at http://www.squeaksource.com/** >>>> FuelExperiments <http://www.squeaksource.com/**FuelExperiments<http://www.squeaksource.com/FuelExperiments>> >>>> that it's >>>> >>>> slow for them, which I guess is due to not adopting #identityHash calls >>>> to >>>> #basicIdentityHash calls for Pharo: >>>> ((0 to: 4095) collect: [:each | each << 22 \\ 4096 ]) asSet size -> 1 >>>> So it basically uses 1 bucket instead of 4096... Whoops. :) >>>> >>>> Uploaded a new version to the MC repository which is adapted for Pharo, >>>> on the same machine my numbers were taken from, it does the same test >>>> as I >>>> used above in 871 ms. (181 with preallocation). >>>> >>>> >>> Cool. One more thing: in Squeak the method using primitive 132 directly >>> was renamed to #instVarsInclude:, so now #pointsTo: works as expected. If >>> this was also added to Pharo, then the #pointsTo: sends should be changed >>> to #instVarsInclude:, otherwise Array can be reported as included even if >>> it wasn't added. >>> I'll upload my LargeIdentityDictionary implementation to the same place >>> this evening, since it's still 2-3 factor faster than other solutionts >>> and >>> there seem to be demand for it. >>> >>> >>> Levente >>> >>> >>> Cheers, >>>> Henry >>>> >>>> >>>> >>>> >>> >> >> -- >> Mariano >> http://marianopeck.wordpress.**com <http://marianopeck.wordpress.com> >> >> > -- Mariano http://marianopeck.wordpress.com

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