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

Re: [Pharo-users] Working directory and image directory
by StÃ©phane Ducasse Aug. 3, 2020

Aug. 3, 2020

Hi Davide Can you open a bug entry on Pharo and on Fuel? S. > On 31 Jul 2020, at 11:37, Davide Varvello <varvello(a)yahoo.com> wrote: > > > From: Davide Varvello <varvello(a)yahoo.com> > Subject: Re: Working directory and image directory > Date: 31 July 2020 at 11:37:22 CEST > To: pharo-users(a)lists.pharo.org > > > Hi > > Isn't it weird this behavior for the community? Should I open a bug? > Cheers > Davide > > > Pharo Smalltalk Users mailing list wrote >> Hi Guys, >> As I already described here: >> http://forum.world.st/Fuel-FLSerializer-tests-are-not-working-pharo-8-td512… >> there is something weird on Pharo 8 (on Mac) because I'm running an image >> that is in the same directory of the Pharo.app but "FileLocator >> workingDirectory" give me the root directory. >> >> I expected the same directory where there is Pharo.app >> Cheers >> Davide >> >> >> >> -- >> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html > > > > > > -- > Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html > > > -------------------------------------------- StÃ©phane Ducasse http://stephane.ducasse.free.fr / http://www.pharo.org 03 59 35 87 52 Assistant: Aurore Dalle 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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Re: [Pharo-users] Metacello, Github and Cryptography
by StÃ©phane Ducasse Aug. 3, 2020

Aug. 3, 2020

Hi francis did you look at the booklet on iceberg available at http://books.pharo.org? S > On 16 Jul 2020, at 16:43, Francis <falzonidavide(a)libero.it> wrote: > > > From: Francis <falzonidavide(a)libero.it> > Subject: Metacello, Github and Cryptography > Date: 16 July 2020 at 16:43:34 CEST > To: pharo-users(a)lists.pharo.org > > > Hi Guys, > > I'm looking for a guide on how to load a project from github but I can't > find anything. > Specifically I want to load the Cryptography package. Udo, told me it is on > https://github.com/pharo-contributions/Cryptography, so I went to > https://github.com/pharo-contributions/Cryptography but there is no > documentation on how to load it. > > Then after some attempts, I evaluated this code: > > Metacello new > baseline: 'Cryptography'; > repository: 'github://pharo-contributions/Cryptography'; > load. > > and it works, but I can't figure out where is the usage of Metacello with > Github > > Thanks > Francis > > > > -- > Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html > > > -------------------------------------------- StÃ©phane Ducasse http://stephane.ducasse.free.fr / http://www.pharo.org 03 59 35 87 52 Assistant: Aurore Dalle 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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Text-Editing UI
by Alex Landraitis Aug. 2, 2020

Aug. 2, 2020

Hello. I would like to modify the text-editing UI in Pharo to add some affordances Iâm accustomed to from MacOS. Specifically, right now command(a.k.a. meta)-left/right-arrow moves one word left/right in Pharo, whereas on MacOS this is done with the option(a.k.a. alt)-key, and command-left/right-arrow moves to the start/end of the current visual line. Another MacOS convention I use a lot and would like in Pharo is triple-click to select a whole paragraph. And if I can implement that, I would also like to disable the corresponding Pharo convention (double click at the start or end of the paragraph). Some smaller things that Iâm also not used to: When moving the text cursor one word at a time, Pharo treats white space as words, whereas MacOS skips over white space. Conversely, when double-clicking to select a whole word, MacOS treats white space between words like a word, whereas Pharo selects the adjacent word. So anyway, Iâm wondering what I would have to modify to customize these UI conventions. I didnât see anything relevant in the settings browser. (There was a "Skip over white spaceâ option under "Text Editing," but it didnât affect how the move-cursor-one-word-at-a-time keystrokes work, so I donât know what it does.) Does anyone have any pointers on where these behaviors are encoded in the system? Or if someone has already posted a package for customizing this sort of thing? Alex Landraitis

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A warning under PharoLauncher 1.8-2019.03.27
by Rene Paul Mages (ramix) Aug. 2, 2020

Aug. 2, 2020

Hello, When the following command is launched : ./pharolauncher/pharo-launcher we can see this warning : http://ramix.org/pharo/version-8.0/InstanceVariableNotFound.png Nota Bene : my laptop in running under Linux Mint 18.3 _Sylvia_ - Release amd64 20171124]/ xenial contrib main non-free -- Thanks for your help. Rene Paul Mages ( GnuPG_key 0x9840A6F7 ) http://www.pharo.fr http://www.linux-azur.org/ramix http://twitter.com/RenePaulMages

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Re: [Pharo-users] Working directory and image directory
by Russ Whaley Aug. 2, 2020

Aug. 2, 2020

I find the same anomalies in V9 for MacOS for workingDirectory pointing to root. I had to create a configuration system so I could effectively manage locations instead of using workingDirectory references. Other anomalies... when attempting to type in a (super) class in class creation - each keystroke launches debugger... same when setting up iceberg/github - typing in a package/folder name launches debugger with each keystroke... annoying, but I can get through it. Oh, this also seems to happen whenever I'm typing 'thisContext'. This all seems related to the type-ahead facility. Also a few observable issues with transmitTo: / sorting with Spec2 in V9... looks like when a column sorting issue was fixed it blew up transmitTo: ... -- sort - now sorts the pane but doesn't appropriately convey through the transmitTo: to the next pane - sometimes crashes, sometimes just doesn't display correct data... unusable, had to put this project on hold. I've asked here before how to submit a bug report - but didn't get a response (my posts are probably too benign for the experts, lol). If you know how to submit a bug report, I'd appreciate a (very) small primer or point me to a link. Thanks! Russ On Fri, Jul 31, 2020 at 6:29 AM Davide Varvello via Pharo-users < pharo-users(a)lists.pharo.org> wrote: > Hi > > Isn't it weird this behavior for the community? Should I open a bug? > Cheers > Davide > > > Pharo Smalltalk Users mailing list wrote > > Hi Guys, > > As I already described here: > > > http://forum.world.st/Fuel-FLSerializer-tests-are-not-working-pharo-8-td512… > > there is something weird on Pharo 8 (on Mac) because I'm running an image > > that is in the same directory of the Pharo.app but "FileLocator > > workingDirectory" give me the root directory. > > > > I expected the same directory where there is Pharo.app > > Cheers > > Davide > > > > > > > > -- > > Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html > > > > > > -- > Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html > > -- Russ Whaley whaley.russ(a)gmail.com

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Re: [Pharo-users] Class side vs instance side (variables and methods)
by Esteban Maringolo Aug. 2, 2020

Aug. 2, 2020

Hi, The "class vs instance" side is one of the most confusing things for newcomers, I remember struggling with it when I learnt Smalltalk (and also was a novice in OOP). It helps you thinking it this way: the instance side is everything that will affect all instances of such class, and you can think the "class side" as what affect the factory for these instances (the sole instance of the class). E.g. let's say you have a "Dog". Dog instances will have a #bark method, and maybe a "color" property (via an instance variable). So when you do: dog1 := Dog new. dog1 color: Color white. dog2 := Dog new. dog2 color: Color black. You have two instances of Dog, and each one with its own color. Both understand the #bark message. But the Dog (capitalized) there, references the Dog class itself (aka "the class side" of Dog) and #new is a method of the "class side" of Dog. So if you implement a #newWhite method in the "class side" of Dog, it would be something like this. Dog class>>newWhite "Returns a new white instance of receiver." ^self new color: Color white In this method the "self new" refers to the class itself, not to the "instance" of the dog, but the returned object of "new" is an instance, and there the #color: message is sent to the instance of Dog. I hope this explanation helps, the meta relations involved in this are more complex than what I explained, but I hope this helps you get started. Regards! Esteban A. Maringolo On Tue, Jul 28, 2020 at 8:35 PM G B via Pharo-users <pharo-users(a)lists.pharo.org> wrote: > > Being new not only to Smalltalk, but OOP in general, I think I finally am understanding things. One area I am still unsure about is the class side versus the instance side. Does one usually use the class side when they want those inherited in every subclass, which frees one from having to declare them in every instance? > > TIA for reading my silly questions.

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smalltalkhub down
by PAUL DEBRUICKER Aug. 2, 2020

Aug. 2, 2020

https://downforeveryoneorjustme.com/smalltalkhub.com

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About some stuff to know if I launch new project to build Graphical User Interface for a database...
by Patrick Gelin Aug. 2, 2020

Aug. 2, 2020

Hi, I'm testing pharo and I would like to know about some things I can't yet really get with documentation : 1. I was asking myself about delivries for (no pharo) end users. I don't want end user use pharo launcher and look at image to load it. I saw article about to build standalone executable but it was for website into a serveur. What about standalone application with graphical interface ? 2. What differences between each smalltalk implementations ? What about Gnu Smalltalk, Smalltalk/X, VisualWork or Pharo ? Do you know a functionnal benchmark web page ? 3. What about standard about pharo language and libraries ? It look pretty difficult to get ride with smalltalk libraries... What do you recomand to know about libaries and tools to build a graphical application with embededÂ database application (Like firebird or EasySQL or PostGresql) ? Do I need an Object Mapping Framework ? Do you know one open source ? 4. What about database reporting (with subreports) framework/library ? 5. What about smart forms with Database ? 6. I'm programming into Linux Mint 9.3. Can I build delivry for Windows from Linux Mint ? Do I need to export/import my project into Windows in order to build Windows delivry ? Is'it possible to launch an executable from USB without no install ? 7. I would like to use events to program Graphical User Interfaces as database frontend. Do you know avanced book to explain semaphores, graphicals framework for cross delivries (Linux / Windows) ? Thank you in advance for your responses. -- /M Patrick GELIN 78 rue du Truchay 38690 BELMONT/

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Smalltalkhub delete date
by Paul DeBruicker Aug. 2, 2020

Aug. 2, 2020

Hi Would someone please add the date you're going to delete smalltalkhub to every page on Smalltalkhub? Thanks Paul

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Aug. 2, 2020

Hello patrick Welcome > > Subject: Class side vs instance side (variables and methods) > Date: 29 July 2020 at 01:34:22 CEST > To: Any Question About Pharo Is Welcome <pharo-users(a)lists.pharo.org> > > > Being new not only to Smalltalk, but OOP in general, I think I finally am understanding things. Did you read my learning OOP book? It does not contain the answer but â¦ > One area I am still unsure about is the class side versus the instance side. Does one usually use the class side when they want those inherited in every subclass, which frees one from having to declare them in every instance? No Class side instances are - to share state among all instances (including subinstances) - state for classes. You have classVariables (should be renamed sharedVariables) and this is different from class instance variables (which are just instance variables of classes and since classes are kind of global you can use also to have act as shared variables). The difference being that there is only one classVar(sharedVariable) per hierarchy while you have one class instance variable per class. S.

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