February 2019 - Pharo-users

Using ZnClient>>#contentWriter
by Esteban Maringolo Feb. 21, 2019

Feb. 21, 2019

Hi all, I'm doing this and it works ZnClient new method: #PUT; url: 'http://127.0.0.1:5984/baseball/2'; contents: (NeoJSONWriter toString: { 'foo' -> 'baz'} asDictionary); contentType: ZnMimeType applicationJson; execute. But if try to use a contentWriter it fails because it can't determine the contentType of the entity. ZnClient new method: #PUT; url: 'http://127.0.0.1:5984/baseball/2'; "contentType: ZnMimeType applicationJson;" contentWriter: [ :entity | NeoJSONWriter toString: entity ]; contents: { 'foo' -> 'baz'} asDictionary; execute. If I uncomment the "contentType:" message send it complains about setting the content type before setting the entity, which makes sense but baffles me. My Idea is to directly pass the object as contents, and let the content writer deal with how it's going to be serialized on the request (a JSON string, for the most part). Although the first expression works, I know it can be done better, but I can't manage to get it working :) Thanks, ps: I also wonder by there aren't #bePut, #bePost, #beDelete, etc. convenience methods instead of passing the HTTP method as a symbol :) Esteban A. Maringolo

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Zinc Error Hierarchy
by Esteban Maringolo Feb. 21, 2019

Feb. 21, 2019

Hi all, Sven, :-) I'm writing some client REST API code and need to handle errors in the call, and found that all Errors are direct descendants of the Error class, why aren't Zinc Errors descendants of a common ZnError class? Regards, Esteban A. Maringolo

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Trying to understand Developing with Pharo, Deploying with Gemstone/s
by sergio ruiz Feb. 21, 2019

Feb. 21, 2019

I have an app that is ready to deploy to alpha. I usually do this by creating a script that builds a minimal pharo image, and run that on a cloud server. I then use TelePharo to make any live tweaks that need to happen, and something like: ./pharo Pharo.image "/run/the/script" to keep run cron jobs, etc. I would like to start using Gemstone/s. I got GsDevKithome up and running, with no problems, but I am having a little bit of trouble figuring out how to proceed. I get what tODE is doing, but I donât get how to do the things I normally do: - I got Seaside installed in the image, but I need several other packages in my install: JSON, Soup, AWS S3, etc. How do I go about installing those? - How do I install my main package? Itâs in an Iceberg project. - How do I update my Iceberg project while itâs live? I think those questions will get me into beta pretty quickly. Thanks! ---- peace, sergio photographer, journalist, visionary Public Key: http://bit.ly/29z9fG0 #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV http://www.codeandmusic.com http://www.twitter.com/sergio_101 http://www.facebook.com/sergio101

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[ANN] ba-st Web stack updated (RenoirSt, Willow and HighchartsSt)
by Gabriel Cotelli Feb. 21, 2019

Feb. 21, 2019

Now that Pharo 7 is finally released, we took some time to update the whole web stack hosted at ba-st <https://github.com/ba-st>. As a general update all the projects now follow the brand new community guidelines <https://github.com/ba-st/Community> and support Pharo 6.1â32 bits and Pharo 7â32 & 64 bits. The build matrix now includes Pharo 8 as a preview. This includes new versions of RenoirSt, HighchartsSt, Boardwalk, Willow and it's related projects. You can see the detailed announcement here <https://medium.com/ba-st/web-stack-summer-release-1d141b2660ee>. Regards, Gabriel

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[ANN] Pharo Consortium New Academic Member: TecnolÃ³gico de Monterrey in Guadalajara
by Marcus Denker Feb. 21, 2019

Feb. 21, 2019

The Pharo Consortium is very happy to announce that TecnolÃ³gico de Monterrey in Guadalajara has joined the Consortium as an Academic Member. About - TecnolÃ³gico de Monterrey in Guadalajara: http://www.gda.itesm.mx - Pharo Consortium: http://consortium.pharo.org The goal of the Pharo Consortium is to allow companies and institutions to support the ongoing development and future of Pharo. Individuals can support Pharo via the Pharo Association: - http://association.pharo.org

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[ANN] Buoy v5.0.0 released!
by Gabriel Cotelli Feb. 21, 2019

Feb. 21, 2019

Buoy <https://github.com/ba-st/Buoy>, the project aiming to complement Pharo <https://www.pharo.org> adding useful extensions reached itâs 5.0.0 version. The supported Pharo versions are 6.1 â 32 bits and 7.0 â 32 & 64 bits. The breaking changes are just in the package organization, so you may have to adapt your baseline dependencies but the rest of the code is backwards compatible with version 4. You can see the detailed release notes here. <https://medium.com/ba-st/buoy-v5-0-0-released-9a26da396ceb> Regards, Gabriel

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What does mean "Detached Working Copy" in Iceberg ?
by BrunoBB Feb. 21, 2019

Feb. 21, 2019

Hi, We have in our server Gitolite instance running. >From Pharo System browser we commit changes to local path and with TortoiseGit we upload to the remote. So far so good but on Iceberg Repository Status i see "Detached Working Copy". What is the meaning of the message ? The the remote is no been "handle" by Pharo ? Or that the remove is not configured in Pharo ? regards, bruno -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

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Pluralising messages or choosing word alternatives
by Tim Mackinnon Feb. 21, 2019

Feb. 21, 2019

I was browsing some of the Pharo issues (always worth doing) - and noticed an interesting one about Test results reporting and pluralisation (https://github.com/pharo-project/pharo/issues/2578) In it, I hadn't noticed String>>asPluralBasedOn: before (and judging from many messages in the image, many others hadn't either). I'm fixing something similar for a refactoring bug and can use this technique there (although from memory, it comes with a health warning as if ever we want to internalise the messages in Pharo, this will need a different approach). However we are probably a distance from doing that - so cleaning up what we have is a good start. Anyway I was curious if there is something to help with messages like: âThere is 1 occurrence of {1}â vs âThere are many occurrences of {1}â, which Iâd like to write something like: âThere â, (âis 1 â, âare many â) pick: result size, âoccurrenceâ asPluralBasedOn: result size, â â, result printString. Tim

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[seaside] adding attributes to link/stylesheet tag
by sergio ruiz Feb. 21, 2019

Feb. 21, 2019

How would I go about rendering this: <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css" integrity="sha384-fnmOCqbTlWIlj8LyTjo7mOUStjsKC4pOpQbqyi7RrhN7udi9RwhKkMHpvLbHG9Sr" crossorigin="anonymousâ> I am not sure how to add the *integrity* and *crossorigin* attributes to the tag.. Thanks! ---- peace, sergio photographer, journalist, visionary Public Key: http://bit.ly/29z9fG0 #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV http://www.codeandmusic.com http://www.twitter.com/sergio_101 http://www.facebook.com/sergio101

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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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About Iceberg
by Sven Van Caekenberghe Feb. 19, 2019

Feb. 19, 2019

Hi, This is a thank you note about Iceberg. I have been moving all my external and internal Pharo code to git/tonel/7 and on multiple occasions I have been pleasantly surprised about the functionality and performance of Iceberg. Basically, it just works. Finally, Pharo code lives in standard open source and commercial repositories (git, GitHub, Bitbucket, ...), without losing anything. I know that it took years to get here and that lots of code and community battles had to be fought. So thank you, to the whole team, you did a great job ! Sven -- Sven Van Caekenberghe Proudly supporting Pharo http://pharo.org http://association.pharo.org http://consortium.pharo.org

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Iceberg working with forks - can it be easier?
by Tim Mackinnon Feb. 19, 2019

Feb. 19, 2019

Hi guys - Iâve spent a few hours scratching my head trying to understand why some of my Pull Requests to a project I had forked kept showing my previous commits when I thought I was all caught up. It suddenly dawned on me, that when I had forked, and then done some work and then submitted a PR, and then applied it upstream that my fork is now no longer in sync with its upstream counterpart. Having not done this in ages, it took me a while to then realise I have to do some git stuff to get it back in sync e.g. (and I think Iâve got this right) git fetch upstream (or whatever name you gave it) Git checkout master Git merge upstream/master So I guess my question is - wouldnât it be helpful if this was a command in Iceberg? It seems quite common to fork a project (I think this is still recommended for pharo itself isnât it?) - and then at some point you need to catchup with that origin again? Or am I missing something? I guess lots of stuff can go wrong - but if it does - youâd still get the same problems on the command line. It just seems that for normal situations - it would be handy to run this straight in Pharo. Thoughts from the git experts? Tim

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How to uncache Commander menu items
by Tim Mackinnon Feb. 19, 2019

Feb. 19, 2019

I was going to write this question - but Denis pinged me on Discord - however I thought I would lob this into the list in case someone else hits the problem and is searching for it. (Maybe I should stick this in Calypso or Commander faq). My problem was that I had built a sub menu in Calypso and specified the order of the menu items as described in the docs. packageContextMenuActivation <classAnnotation> ^ CmdContextMenuActivation byItemOf: ClyExercismMenuGroup order: self contextMenuOrder for: ClyTaggedClassGroup asCalypsoItemContext However when I went to add some icons and change the ordering I was finding that my menu wasnât updating. There are 2 solutions (one better than the other). The brute force way is: CmdContextMenuActivation resetCache. The elegant way was to add an annotation to my menu ordering method contextMenuOrder <classAnnotationDependency> ^1 Tim By the way - to see what icons you can use in your menus, inspect: ThemeIcons current

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How do you avoid loading master code which is indirectly referenced by a version in the baseline?
by Sabine Manaa Feb. 19, 2019

Feb. 19, 2019

For test and deployment, I have to be sure that I know exactly which versions I load and I have to be sure to be able to load exactly the same code again. I do not speak from my projects but from the projects I use. I found myself asking people again and again to set tags in their projects and being surprised again and again by changed code even though I am trying to load versions (with versions I mean NOT #stable or #master but like v2.2.2). The reason for this problem I then have, is that often in baselines with version numbers (e.g. v2.2.2) other projects are referenced but as master. So in consequence, I load version but get master from another project which is referenced indirectly. For me, that this is not good at all. I was wondering that this seems not to be a problem for others. I found out that I can put a lock in my baselines preLoadDoIt for those indirectly referenced projects. Examlpe Artefact v1.0.1 https://github.com/pharo-contributions/Artefact/blob/v1.0.1/src/BaselineOfA… loads github://zweidenker/Units/src (which is master). I found a solution for this: In the preLoadDoIt of my baseline I lock Units to a certain commit. preLoadDoIt Metacello new baseline: 'Units'; repository: 'github://zweidenker/Units:98d5a3d/src'; lock. This solves my problem in this example. Disadvantage is that I have to analyze everything which is loaded from the projects I use and create a lock for it. Questions: 1.) Wouldn't it make sense to have some mechanism, perhaps in Rowan then, where I can say that a project which has a number can only reference other projects with numbers? This would avoid the whole problem 2.) How do others solve this problem? addendum: I do not speak about project versions which are in development, here #stable or master are great features. But sometime when a project has a certain state, and it gets a version, then it should not change..imho -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

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Re: [Pharo-users] OSProcess / OSSubprocess / LibC uniqueInstance
by Thierry Goubier Feb. 19, 2019

Feb. 19, 2019

Hi Serge, Albrecht, loading OSProcess directly with the following expression works: Metacello new configuration: 'OSProcess'; repository: 'http://www.squeaksource.com/MetacelloRepository'; load There is still some work to be done on OSProcess adaptation to Pharo 7, but they are in rarely used parts. Regards, Thierry Le mar. 19 fÃ©vr. 2019 Ã 12:19, Albrecht Baur via Pharo-users <pharo-users(a)lists.pharo.org> a Ã©crit : > > I need to execute OS commands from within a x64 pharo 7.01 image on centos7 (for example: 'zip -r 123.zip zipme/'). > > I found these 3 tools: OSProcess, OSSubprocess, LibC uniqueInstance > > But I did not find any docu on which one to use for which use case. > > OSProcess is in the catalog browser but fails loading because of ByteArray>>ifNotNilDo: > -> So OSProcess is not to be used with p7 ? > > OSSubprocess loads via catalog browser and the following snippet works (even though 64 bit): > > OSSUnixSubprocess new > command: 'zip'; > arguments: #('-r' '123.zip' 'zipme'); > redirectStdout; > runAndWaitOnExitDo: [ :process :outString | > outString inspect > ] > > So is it ok to use OSSubprocess with 64 bit even though documented as 32 bit only ? (here: https://github.com/pharo-contributions/OSSubprocess#installation) > > LibC uniqueInstance system: 'zip -r 123.zip zipme/' > ... works, but I don't know if its the right tool for this. > > Is there somewhere more info on which tool to use for which use case ? > > Thanks in advance! > > Albrecht > > PS.: I need to use zip as os process only because of this issue: https://github.com/pharo-project/pharo/issues/2584

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Re: [Pharo-users] Pier3 & content management
by Esteban Lorenzano Feb. 19, 2019

Feb. 19, 2019

Hello, Not many people are using it, but it should be not much problem make it run in Pharo 7 (and with current version of Seaside). Esteban > On 19 Feb 2019, at 12:03, Albrecht Baur via Pharo-users <pharo-users(a)lists.pharo.org> wrote: > > > From: Albrecht Baur <baur.albrecht(a)googlemail.com> > Subject: Pier3 & content management > Date: 19 February 2019 at 12:03:27 CET > To: Any question about pharo is welcome <pharo-users(a)lists.pharo.org> > > > Hey, > > what is the status of Pier3 + Pier3AddOns ? > > -> Seems to me that it is discontinued since Pharo 5, right ? > > I'm asking because I look around to see if there is a project usable as a starting point of a small web content management module for seaside (nothing too complicated / fancy). > > Is there something besides Pier that goes into this direction ? > > Thanks for hints, > Albrecht > >

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