- Pharo-users - lists.pharo.org

Re: [Pharo-users] how to test, if the class has "shared identity" of instances in the whole image (SmallIntegers, Symbols...)
by Richard O'Keefe Feb. 20, 2019

Feb. 20, 2019

It is not clear to me what the semantics of such a selector would be. Consider this example: t := [:x | x copy == x]. a := t value: 1.0e38. b := t value: 1.0e308. What do you expect a and b to be? GNU Smalltalk: a=true, b=true. My Smalltalk, 32-bit or 64-bit: a=true, b=true. Squeak/Pharo, 32-bit: a=false, b=false. Squeak/Pharo, 64-bit: a=true, b=false. Squeak/Pharo, after a patch: a=true, b=true. There are two quite different reasons why x copy == x might be true: * x is immutable (including its parts), and can be thought of as a mathematical value, so that there is no need to copy it Examples: every kind of number, characters, booleans, immutable collections, block closures * x is a way of accessing a unique resource, and should not be copied, so making copy the identity is a safety measure. Examples: Semaphores, Mutexes, SharedQueues, data base connections, some kinds of streams, singletons. * Laziness or error (inherited method not revised). What is your use case? On Thu, 21 Feb 2019 at 07:32, Petr Fischer via Pharo-users < pharo-users(a)lists.pharo.org> wrote: > Hello, some classes, like Symbols or SmallIntegers, shares identity of > value instances in the whole image (I may say it wrong), so: > > 1 == 1 copy. [true] > #aaa == #aaa copy. [true] > > all other classes not, like Strings, Objects etc., so: > > 'aaa' == 'aaa' copy. [false] > > Is there any test method (maybe on the class side) I could ask for this > (isXXX)? > > Thanks! pf > >

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How do you easily re-categorise methods in Calypso?
by Tim Mackinnon Feb. 20, 2019

Feb. 20, 2019

Hi - Iâm scratching my head over how to easily re-caegorise methods in calypso? Iâve overridden some methods in subclasses and picked up the wrong category (which the critic is slapping me for). But when I click on the method - I canât drag it to the new category, so if I click on the pencil in the status line (or the current category name - not sure why they are independently clickable?) - it shows me a rather unhelpful list of protocols. Iâm not sure where this list comes from as it doesnât seem to include any of the protocols that are already in the class? (and those which I want to use?). So I have to start typing âaccesâ and can click on accessingâ¦ Am I missing a simple trick - or is this an area that needs some work?

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Pharo general questions for a commercial application
by BrunoBB Feb. 20, 2019

Feb. 20, 2019

Hi, My name is Bruno i'been using Smalltalk since 1999 for commercial applications, mostly Dolphin, GemStone/S and Visual Works. Now we have a commercial project and we are going to use Pharo :) So we have some general questions. 1) Which version of Pharo to use in a production deployment 6.1 or 7.0 ? 2) We need a local database to Pharo app, which open source database is better to use with Pharo: mysql, postgree or .... In term of packages for Pharo. There is https://guillep.github.io/DBXTalk/ but i do not know if is up to date. 3) There is any documentation about deployment and maintenance for a Pharo + Seaside app ? I have found "2016-10-06-EnterprisePharo.pdf" but may there are other sources... regards, bruno -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

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how to test, if the class has "shared identity" of instances in the whole image (SmallIntegers, Symbols...)
by Petr Fischer Feb. 20, 2019

Feb. 20, 2019

Hello, some classes, like Symbols or SmallIntegers, shares identity of value instances in the whole image (I may say it wrong), so: 1 == 1 copy. [true] #aaa == #aaa copy. [true] all other classes not, like Strings, Objects etc., so: 'aaa' == 'aaa' copy. [false] Is there any test method (maybe on the class side) I could ask for this (isXXX)? Thanks! pf

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How to load a single package in a Metacello baseline
by N. Bouraqadi Feb. 20, 2019

Feb. 20, 2019

Hi, I'm updating the the baseline of PharoJS to use the zinc websockets from the github repo https://github.com/svenvc/zinc. I want to load package Zinc-WebSocket-Core. So, in BaselineOfPharoJS>>#baseline: I've defined spec baseline: 'ZincHTTPComponents' with: [ spec loads: #('Zinc-WebSocket-Core'); repository: 'github://svenvc/zinc' ]. However, for some reason I get Zinc-WebSocket-Tests loaded. Any hint how to avoid it?(edited) Looking at BaselineOfZincHTTPComponents>>#baseline:, package WebSocket-Core does not seem to depend on tests spec package: 'Zinc-WebSocket-Core' with: [ spec requires: 'Zinc-HTTP' ] Thanks, Noury

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Re: [Pharo-users] [ANN] SETT (Store Export to Tonel Tools) for Pharo6.1
by Esteban Maringolo Feb. 20, 2019

Feb. 20, 2019

Dale, I tried to test SETT to migrate a Package from Store to our repo. But it fails while initializing the git repository. I set the destination config to `isNewRepository := false`, then it works as expected. I'm testing it against the Cincom Public Repository, which being remote and full of code (and garbage), limiting by date isn't useful if I can't filter by a particular package name/pattern (I couldn't find such option). In any case, it's a helpful tool to ease the migration of code. Regards, Esteban A. Maringolo El miÃ©., 16 ene. 2019 a las 18:18, Dale Henrichs via Pharo-users (< pharo-users(a)lists.pharo.org>) escribiÃ³: > > On 1/16/19 11:56 AM, Esteban Maringolo wrote: > > This is great! > > One less fence to move code from one dialect to another. :) > > I will follow the examples and try to export code from Store and load id > in Pharo. > > Is it mandatory to use Linux? > > We've only tested with Linux and it looks like the current code base is > wired to use Unix[1] .... > > Dale > > [1] > https://github.com/GemTalk/SETT/blob/master/StoreImporter.package/SettGitRe… > > > Esteban A. Maringolo > > > El miÃ©., 16 ene. 2019 a las 16:38, Dale Henrichs (< > dale.henrichs(a)gemtalksystems.com>) escribiÃ³: > >> GemTalkSystems is pleased to announce SETT (Store Export to Tonel >> Tools)[1]. SETT is open source project with an MIT license. >> >> SETT (Store Export to Tonel Tools) is a set of tools to export Smalltalk >> code from Store and >> write into the Tonel file format managed using Git. >> >> SETT is: >> >> - a Pharo 6.1 application, that >> - connects to a Postgres Database >> - containing source code history in VisualWorks Store format; and >> - writes to a Git repository >> - in Tonel format >> - maintaining all version history, source code and SCM metadata. >> >> SETT was developed last year to support one of our commercial customers >> in their conversion From Store to Rowan[2]. Rowan artifacts are produced as >> part of the output of SETT, but the Rowan artifacts can be ignored. The >> important bit is that SETT converts from Store to Tonel and maintains >> version history in git. >> >> Please see the project ReadMe[3] and Wiki[4] for additional details. >> >> Dale >> [1] https://github.com/GemTalk/SETT >> [2] https://github.com/GemTalk/Rowan >> [3] https://github.com/GemTalk/SETT#overview >> [4] https://github.com/GemTalk/SETT/wiki >> >> >>

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Phorms repository?
by Manuel Leuenberger Feb. 20, 2019

Feb. 20, 2019

Hi, I am looking into AST transformations and played with the RBPattern language, which isn't quite powerful enough to do what I want to do (my matching patterns are more complex). I found papers about Phorms, which seems like a nice language to investigate. But I could not find any repository to load the code from. Where can I find the Phorms code? Cheers, Manuel

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RBPattern syntax
by Manuel Leuenberger Feb. 20, 2019

Feb. 20, 2019

Hi, I am looking into the RB pattern language for refactoring and I am having trouble matching and replacing non-trivial pattern. Given the following excerpt, I want to match "b shape <rest>." and replace it with "b shape: [ :x | x <rest> ]" b shape circle size: 15; color: (Color veryLightGray alpha: 0.4); if: [ :value | toBeRed includes: value ] fillColor: Color red. How can I do this? I tried using "b shape ``@messages", but this only matches "b shape circle". Using "b shape `message `;middle; `;last" for some reason then also matches the following, which I think it should not: b edges moveBehind; connectToAll: [ :v | v \\ 20 ~~ 0 ifTrue: [ Array with: v + 1 with: v + 20 ] ifFalse: [ Array with: v + 20 ] ]. There seems not be too much documentation about the pattern language, only found tests, some short help description from RB and Yuriy's MatchTool. How can I match the node correctly? Cheers, Manuel

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Looking for a STON in/out "factory"
by ducasse Feb. 20, 2019

Feb. 20, 2019

Hi I would like to use STON to save objects that non programmer will edit. >From that perspective I would like to be able to have a different class name than the one in the implementation. For example instead of 'SQOne{#question:''Where do developers typically write the Pharo syntax?'',#choices:[''a stamp'',''an envelop'',''a postcard''],#solution:3,#explanation:''It is common to say that the Pharo syntax fits on a postcard.â'} having âOneChoice{#question:''Where do developers typically write the Pharo syntax?'',#choices:[''a stamp'',''an envelop'',''a postcard''],#solution:3,#explanation:''It is common to say that the Pharo syntax fits on a postcard.â'} Iâm wondering if - there are hooks for that in STON so that I can inject a map. I look super fast at the doc and browsing the code and I could not find them. - if someone build such kind of layers on top of STON Stef

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Re: [Pharo-users] OSProcess / OSSubprocess / LibC uniqueInstance
by Alistair Grant Feb. 20, 2019

Feb. 20, 2019

On Tue, 19 Feb 2019 at 13:45, Albrecht Baur via Pharo-users <pharo-users(a)lists.pharo.org> wrote: > > Thank you. > > The Metacello snippet helps. It loads a newer version than that from the catalog browser. > > > But 2 more questions: > > 1.: Is there a reason not to use just ... > > LibC uniqueInstance system: 'zip -r 123.zip zipme/' You don't have the same level of control over the process, can't pipe stdio, it introduces issues with interrupts (SIGINT, SIGQUIT), etc. > And 2.: Is it ok to use OSSubprocess on in 64 bit images even though the documentation says it doesn't work ? (but it does) > > -> https://github.com/pharo-contributions/OSSubprocess#installation That's a surprise. Yes, OSSubprocess is officially supported on 64 bits, the readme is out of date. HTH, Alistair

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