May 2020 - Pharo-users - lists.pharo.org

Re: [Pharo-users] New user
by StÃ©phane Ducasse May 20, 2020

May 20, 2020

> On 20 May 2020, at 18:59, G B <g_patrickb(a)yahoo.com> wrote: > > > From: G B <g_patrickb(a)yahoo.com> > Subject: Re: [Pharo-users] New user > Date: 20 May 2020 at 18:59:15 CEST > To: Any question about pharo is welcome <pharo-users(a)lists.pharo.org> > > > Thank you all for your comments. I'm using Pharo on Windows and I uninstalled it completely and reinstalled, so I will use your suggestions. > > Another question, if I may, is what order of books should I use? I purchased "Pharo 5 by Example" (because it was newer than "Pharo by Example," "Learning Object-Oriented Programming, Design, and TDD with Pharo," "Deep Into Pharo" (which I know would be after PBE), and "Enterprise Pharo" (which would probably be after Deep into Pharo). You mentioned that you know how to program so in a couple of days you should get up to speed. Our data is that 3rd students takes two weeks and I know people that did the mooc in speed run in two days. I would follow the mooc. You will get much faster and there is an image 32 that is in sync with the mooc version. The mooc is of excellent quality because we put 10 years of teaching experience in it. We are working on a mooc version with Pharo by Example 80. We are about to release 70 new videos of scenarios around Pharo 80. Just verifying the titles of such slides and videos take time. Then you can read in diagonal Pharo by Example (I hope to get some time to update chapter 3 this week-end). After I would read in diagonal some chapters there and there and ask questions. I think that in a couple of days you should get up to start developing a small app. You do not need to know everything. In PBE8 there are two new chapters on Pharo and git. To get started. Deep into Pharo is not really needed. This is more extra knowledge and Iâm currently updating some chapters for P8. I extracted the Zinc HTTP chapters, but you can develop seaside without caring about http. To get started you need to know how to define a class and a method. S.

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Re: [Pharo-users] New user
by Ben Coman May 20, 2020

May 20, 2020

Something I'm not quite sure on, is whether using repository: 'github://....'rather than a HTTPS connection requires SSH keys to set up. Presuming so, you should first ensure you SSH is working from the command lineper... https://help.github.com/en/github/authenticating-to-github/testing-your-ssh… think a facility to do a similar user-check from within Pharo would be extremely useful.) Next, if you are on Windows, the added complexity is that "Use Custom Keys" must be enabled.(And it would be useful if that was the default for Windows. I trip over it _every_ time I start a new image.) [image: image.png] cheers -ben On Wed, 20 May 2020 at 06:38, G B via Pharo-users < pharo-users(a)lists.pharo.org> wrote: > I am new to Pharo and liked that it is a cleaned up and modern Smalltalk, > but I think I'm done before I ever started. My biggest interest was in > Seaside, yet trying to install it from instructions on the Seaside GitHub > fails: > > Metacello new > baseline:'Seaside3'; > repository: 'github://SeasideSt/Seaside:master/repository'; > load > > Trying to load packages from the catalog browser like Magritte fails. Some > packages aren't updated for 8.0 and are only available for 7.0. Some are > only available for 4.0. Trying to follow the book for creating a blog has > ha me spend time trying to get something going to no avail. > > I'm not an expert programmer, but I've been in IT for 25 years and can do > some C, Racket, Pascal, shell languages, awk, Perl, but I am stymied at > every turn with Pharo. > > >

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Re: [Pharo-users] New user
by Vitor Medina Cruz May 20, 2020

May 20, 2020

Hello, I feel your pain. Updated, consistent and centralized documentation is not strong in Pharo. Things are changing fast and docs don't catch up, also there is an effort to move projects to github, so usually updated stuff are there. I never use Catalog anymore because often things goes wrong. Books are only good to explain major concepts that are less likely to change over time, in order to getting started I would recommend: 1- Seaside github project: https://github.com/SeasideSt/Seaside. Their readme and wiki page seems to be very good and updated, I just evaluated this on playground and it worked as expected: Metacello new baseline:'Seaside3'; repository: 'github://SeasideSt/Seaside:v3.4.1/repository'; load I avoid using master tag as it is usually development branch or frequently has some commit that breaks everything up and and what I want is something reliable, so I always use version tags (when the projects provides one). After that, I think using the wiki ( https://github.com/SeasideSt/Seaside/wiki) or seaside web book ( http://book.seaside.st/book) can get you through all you need to know. 2- Pharo open documentation is a much better place to be getting started with Pharo: https://github.com/pharo-open-documentation/pharo-wiki 3- Then you can go and read Pharo by Example and Deep in Pharo books in order to get more information after you can get started, if you are interest, but by now you must be able to do most basic stuff with the system.. Hope that helps you getting by and fuel you interest in Smalltalk and Pharo. Regars, Vitor On Tue, May 19, 2020 at 7:38 PM G B via Pharo-users < pharo-users(a)lists.pharo.org> wrote: > I am new to Pharo and liked that it is a cleaned up and modern Smalltalk, > but I think I'm done before I ever started. My biggest interest was in > Seaside, yet trying to install it from instructions on the Seaside GitHub > fails: > > Metacello new > baseline:'Seaside3'; > repository: 'github://SeasideSt/Seaside:master/repository'; > load > > Trying to load packages from the catalog browser like Magritte fails. Some > packages aren't updated for 8.0 and are only available for 7.0. Some are > only available for 4.0. Trying to follow the book for creating a blog has > ha me spend time trying to get something going to no avail. > > I'm not an expert programmer, but I've been in IT for 25 years and can do > some C, Racket, Pascal, shell languages, awk, Perl, but I am stymied at > every turn with Pharo. > > >

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Re: [Pharo-users] New user
by StÃ©phane Ducasse May 20, 2020

May 20, 2020

Hi patrick Welcome. I do not use Seaside recently but I know that many many people. There is a online channel about seasiders in the Pharo discord channel. May be you should post there to get a fast answer. Did you look at the mooc? If you need some help with the setup we can have a screen sharing session. S. > On 20 May 2020, at 00:37, G B <g_patrickb(a)yahoo.com> wrote: > > > From: G B <g_patrickb(a)yahoo.com> > Subject: New user > Date: 20 May 2020 at 00:37:12 CEST > To: Any Question About Pharo Is Welcome <pharo-users(a)lists.pharo.org> > > > I am new to Pharo and liked that it is a cleaned up and modern Smalltalk, but I think I'm done before I ever started. My biggest interest was in Seaside, yet trying to install it from instructions on the Seaside GitHub fails: > > Metacello new > baseline:'Seaside3'; > repository: 'github://SeasideSt/Seaside:master/repository'; > load > > Trying to load packages from the catalog browser like Magritte fails. Some packages aren't updated for 8.0 and are only available for 7.0. Some are only available for 4.0. Trying to follow the book for creating a blog has ha me spend time trying to get something going to no avail. > > I'm not an expert programmer, but I've been in IT for 25 years and can do some C, Racket, Pascal, shell languages, awk, Perl, but I am stymied at every turn with Pharo. > > > > -------------------------------------------- StÃ©phane Ducasse http://stephane.ducasse.free.fr / http://www.pharo.org 03 59 35 87 52 Assistant: Julie Jonas FAX 03 59 57 78 50 TEL 03 59 35 86 16 S. Ducasse - Inria 40, avenue Halley, Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza Villeneuve d'Ascq 59650 France

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New user
by G B May 19, 2020

May 19, 2020

I am new to Pharo and liked that it is a cleaned up and modern Smalltalk, but I think I'm done before I ever started.Â My biggest interest was in Seaside, yet trying to install it from instructions on the Seaside GitHub fails: Metacello new baseline:'Seaside3'; repository: 'github://SeasideSt/Seaside:master/repository'; load Trying to load packages from the catalog browser like Magritte fails. Some packages aren't updated for 8.0 and are only available for 7.0.Â Some are only available for 4.0.Â Trying to follow the book for creating a blog has ha me spend time trying to get something going to no avail. I'm not an expert programmer, but I've been in IT for 25 years and can do some C, Racket, Pascal, shell languages, awk, Perl, but I am stymied at every turn with Pharo.

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Pharo-Sound
by Russ Whaley May 19, 2020

May 19, 2020

I'm using Pharo 8 stable (64bit) version. I pulled PharoSound from the Catalog and installed. Installed fine, no errors. I went to the comments on the abstract class. Copied the examples to the Playground, ran them - worked fine (although I don't know how to stop the dang PluckedString example!!)... I digress :) I created my own subclass to play specific sounds at certain events in my application. Worked well. A day later - I have no sound in my image at all now. Nothing works. I reinstalled from the Catalog. Ran the code listed in the AbstractSound comments - nothing. I installed a new Pharo 8 stable 64-bit image - pulled PharoSound in, copied the sampe code from AbstractSound comments... and it worked just fine. Any ideas how I can get sound to work again on my original image? For me, it is a real pain to try and migrate all my code over to a new image. It is apparently a character flaw on my part, but it takes me hours to get Git/Iceberg working properly on a new image. (yes, I'm ashamed). I see a new book on the topic, but I had been following that book while it was wip, and Git/Iceberg just whips my butt. But if going to a new image is the solution, I'll try, try again. What do you think? Thanks, Russ -- Russ Whaley whaley.russ(a)gmail.com

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FFI and absolute path to dll
by ASAM May 19, 2020

May 19, 2020

Hello, I'm using Pharo 8 64bit on Windows 10 64bit. I am trying to access a 32bit dll via a relative path. I'm desperate. I've been reading the document (http://books.pharo.org/booklet-uffi/pdf/2020-02-12-uFFI-V1.0.1) all the time up and down but I can't find an example of absolute path and Windows. If e.g. my.dll file would be stored here. C:\Program Files (x86)\GALEP5\my.dll then what should the method win32ModuleName return? Another question came to me while reading the document. It is actually important to know whether the DLL was generated as cdecl or stdcall? The dll i try to call use stdcall. I would be very happy if someone helps me. I can no longer see the message "External module not found" :-) Thanks a lot! -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

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Cant add local git repo to Iceberg
by Michael Burns May 18, 2020

May 18, 2020

I already have a GitHub repository named FredsLunch-Pharo. The local clone of that (using shell and git) is Importing repository from /Users/Michael/Development/gitRepos/FredsLunch-Pharo > [graphe:~/Development/gitRepos/FredsLunch-Pharo] Michael% git status > On branch master > Your branch is up-to-date with 'origin/master'. > Changes to be committed: > (use "git reset HEAD <file>..." to unstage) > > modified: FredsLunch.st > new file: FredsLunchCSV.st > new file: FredsLunchLunch.st > new file: FredsLunchLunchData.st > new file: FredsLunchLunchList.st > new file: FredsLunchMain.st > new file: FredsLunchMember.st > new file: FredsLunchMemberList.st > new file: FredsLunchParticipant.st > new file: FredsLunchTest.st > modified: FredsLunchTests.st > new file: ManifestFredsLunch.st > > Untracked files: > (use "git add <file>..." to include in what will be committed) > > pharo-local/ > > [graphe:~/Development/gitRepos/FredsLunch-Pharo] Michael% pwd > /Users/Michael/Development/gitRepos/FredsLunch-Pharo > [graphe:~/Development/gitRepos/FredsLunch-Pharo] Michael% > The files currently in that repo were the result of doing a fileOut of each of the classes in the package. Now, Iâm trying to register that local repository in Iceberg. After I supply the pathname for the repository and press OK I get an exception window. Copy stack from debug window: > FFICallout>>loaderForArgNamed: > FFICallout>>loaderForArgNamed:indirectIndex: > FFIVariableArgument>>resolveUsing: > [ :arg2 | arg2 resolveUsing: arg1 ] in FFIFunctionSpec>>resolveUsing: in Block: [ :arg2 | arg2 resolveUsing: arg1 ] > OrderedCollection>>do: > FFIFunctionSpec>>resolveUsing: > FFICalloutMethodBuilder>>generateMethodFromSpec: > FFICalloutMethodBuilder>>generate > FFICalloutMethodBuilder>>build: > FFICalloutAPI>>function:library: > FFICalloutAPI>>function:module: > LGitRepository(LGitExternalObject)>>callUnchecked:options: > LGitRepository>>repository_open:bare_path: > [ self > repository_open: self > bare_path: self repositoryReference pathString ] in LGitRepository>>open in Block: [ self... > LGitRepository(LGitExternalObject)>>withReturnHandlerDo: > LGitRepository>>open > IceLibgitRepository>>repositoryHandle > [ | tmp1 | > self isValid > ifFalse: [ ^ #() ]. > tmp1 := self repositoryHandle allRemotes. > ^ tmp1 > collect: [ :arg1 | > | tmp3 | > tmp3 := IceGitRemote name: arg1 remoteName url: arg1 url. > tmp3 > localRepository: self; > yourself ] ] in IceLibgitRepository>>remotes in Block: [ | tmp1 |... > BlockClosure>>on:do: > IceLibgitRepository>>handleLibgitError: > IceLibgitRepository>>remotes > IcePharoPlugin class>>isAvailableFor: > [ :arg2 | arg2 isAvailableFor: arg1 ] in IcePlugin class>>allAvailableFor: in Block: [ :arg2 | arg2 isAvailableFor: arg1 ] > OrderedCollection>>select: > IcePlugin class>>allAvailableFor: > IcePluginManager>>availablePluginsFor: > IcePluginManager>>initializeRepository: > IcePluginManager class>>managerFor: > IceLibgitRepository(IceRepository)>>pluginManager > IceRepositoryCreator>>addLocalRepository > > If I try to Fuel out the exception I get another exception whose stack looks like this: > File>>openForWrite: > File>>openForWrite > File>>writeStream > File>>writeStreamDo: > FLPharo7Platform>>fileNamed:writeStreamDo: > FLSerializer>>serialize:toFileNamed: > FuelOutStackDebugAction class>>serializeTestFailureContext:toFileNamed: > FuelOutStackDebugAction>>serializeStack > FuelOutStackDebugAction>>executeAction > FuelOutStackDebugAction(DebugAction)>>execute > [ self execute ] in FuelOutStackDebugAction(DebugAction)>>asGlamourAction in Block: [ self execute ] > BlockClosure>>glamourValueWithArgs: > GLMGenericAction(GLMAction)>>actOn: > GLMGenericAction(GLMAction)>>morphicActOn: > [ | tmp2 | > (tmp2 := selector numArgs) = 0 > ifTrue: [ target perform: selector ] > ifFalse: [ tmp2 = arguments size > ifTrue: [ target perform: selector withArguments: arguments ] > ifFalse: [ target perform: selector withArguments: (arguments copyWith: arg1) ] ]. > self > showShortcut; > changed ] in ToggleMenuItemMorph(MenuItemMorph)>>invokeWithEvent: in Block: [ | tmp2 |... > BlockClosure>>ensure: > CursorWithMask(Cursor)>>showWhile: > ToggleMenuItemMorph(MenuItemMorph)>>invokeWithEvent: > ToggleMenuItemMorph(MenuItemMorph)>>mouseUp: > ToggleMenuItemMorph(MenuItemMorph)>>handleMouseUp: > MouseButtonEvent>>sentTo: > ToggleMenuItemMorph(Morph)>>handleEvent: > MorphicEventDispatcher>>dispatchDefault:with: > MorphicEventDispatcher>>handleMouseUp: > MouseButtonEvent>>sentTo: > [ ^ arg1 sentTo: self ] in MorphicEventDispatcher>>dispatchEvent:with: in Block: [ ^ arg1 sentTo: self ] > BlockClosure>>ensure: > MorphicEventDispatcher>>dispatchEvent:with: > ToggleMenuItemMorph(Morph)>>processEvent:using: > MorphicEventDispatcher>>dispatchDefault:with: >

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[ANN] Smalltalkhub Readonly Migration tuesday 8hs - server maintenance / migration
by Guillermo Polito May 18, 2020

May 18, 2020

Hi all, We wanted to announce that, as announced previously, Smalltalkhub is going read only from tomorrow, 8h central Europe time. This means the service could be down for a couple of hours until the sync of data is done. Keep tuned, Guille and Christophe in behalf of the RMoD team

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MetaLinks for Dynamic Contracts
by Evan Donahue May 18, 2020

May 18, 2020

Hello, I am returning to some work in Pharo after about ~2.5 years and reminding myself of what I was working on before I got sidetracked. It appears I had mostly finished for release a dynamic contracts library for run time type checking based on Racket's contract library.[1] However, it relied on some hackery to interact well with the TestCoverage class, since both the contract and the TestCoverage wanted to replace the method during the run of a test. However, since it seems in Pharo 8 the TestCoverage class is no longer present, this seems like a good time to re-evaluate the project before I go in to see what needs to be patched up. I therefore have three questions: 1) Are there now any existing libraries for dynamic contracts that I should use instead of patching my old library? 2) Is MetaLinks the preferred way to intercept messages, and if so can someone point me to the repo (I can't seem to find it on Github)? 3) If 2, does MetaLinks play well with whatever is the current TestCoverage alternative that I assume still does some form of message interception, e.g. will the test coverage function still work properly on a MetaLink'ed message, or will that require further hackery (I discovered MetaLinks after the first version, so I used the more basic message replacement apis)? Thank you, Evan [1] https://docs.racket-lang.org/reference/contracts.html

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