January 2022 - Pharo-users - lists.pharo.org

Re: Ghost subclass

by Robert Briggs

A thought occurred to me.Â I use a ERA100SharedPool to hold the CurrentProject global variable, for access by the classes in my model. I ran a test on the offending image to retrieve and inspect the contents of CurrentProject which is a reference to ERAProject.Â Each time an instance of an ERAElement subclass is created an entry is added to a Dictionary of instances of the relevant subclass.Â It still holds instances of the Component Subclass created during one of my unit tests.Â I wonder if this may be a clue as it is essentially a hanging reference to the subclass.Â I probably should have a tear-down method to clean up such references. R From: Guillermo Polito <guillermopolito(a)gmail.com> Reply to: Any question about pharo is welcome <pharo-users(a)lists.pharo.org> Date: Monday, 10 January 2022 at 08:47 To: Any question about pharo is welcome <pharo-users(a)lists.pharo.org> Cc: Robert Briggs <rbriggs2009(a)me.com> Subject: [Pharo-users] Re: Ghost subclass Hi Robert, Can you tell us how did you remove the subclasses? Was it through the UI? Which option? Or was it programatically? Can you reproduce it? G El 8 ene 2022, a las 18:25, Robert Briggs via Pharo-users <pharo-users(a)lists.pharo.org> escribiÃ³: Hi I currently have a problem that I am unable to resolve. I am working on a personal project. I created a Class âERAElementâ and four subclasses: âComponentâ, âCriticalIssueâ, âDecisionâ and âRequirementâ. A while ago I removed he subclass Component, and naturally Pharo will not let me create an instance of this subclasses. However it is still listed in the ERAElement subclass collection. As shown below. <image001.png> I can test for existence of each subclass as shown below: <image002.png> However the same code will not accept Component as a possible value. <image007.png> I can even create a new Subclass Component and get two (different) subclasses with the same name. Any thoughts as to what is going on and if so how to resolve the problem? Many thanks in advance for any and all feedback. Kind regards Robert Briggs

Jan. 10, 2022

Re: Ghost subclass

by Robert Briggs

Hi Guillermo As I explained to Stephane, unfortunately I am not able t remember exactly what I did as I didnât notice the problem until sometime later. I assume I removed it through the UI.Â I have since been working with programmatically creating subclasses having exported the relevant packages to a fresh image.Â It all seems to work as expected. Regards R From: Guillermo Polito <guillermopolito(a)gmail.com> Reply to: Any question about pharo is welcome <pharo-users(a)lists.pharo.org> Date: Monday, 10 January 2022 at 08:47 To: Any question about pharo is welcome <pharo-users(a)lists.pharo.org> Cc: Robert Briggs <rbriggs2009(a)me.com> Subject: [Pharo-users] Re: Ghost subclass Hi Robert, Can you tell us how did you remove the subclasses? Was it through the UI? Which option? Or was it programatically? Can you reproduce it? G El 8 ene 2022, a las 18:25, Robert Briggs via Pharo-users <pharo-users(a)lists.pharo.org> escribiÃ³: Hi I currently have a problem that I am unable to resolve. I am working on a personal project. I created a Class âERAElementâ and four subclasses: âComponentâ, âCriticalIssueâ, âDecisionâ and âRequirementâ. A while ago I removed he subclass Component, and naturally Pharo will not let me create an instance of this subclasses. However it is still listed in the ERAElement subclass collection. As shown below. <image001.png> I can test for existence of each subclass as shown below: <image002.png> However the same code will not accept Component as a possible value. <image007.png> I can even create a new Subclass Component and get two (different) subclasses with the same name. Any thoughts as to what is going on and if so how to resolve the problem? Many thanks in advance for any and all feedback. Kind regards Robert Briggs

Jan. 10, 2022

Re: Ghost subclass

by Guillermo Polito

Hi Robert, Can you tell us how did you remove the subclasses? Was it through the UI? Which option? Or was it programatically? Can you reproduce it? G > El 8 ene 2022, a las 18:25, Robert Briggs via Pharo-users <pharo-users(a)lists.pharo.org> escribiÃ³: > > Hi > > I currently have a problem that I am unable to resolve. > > I am working on a personal project. > > I created a Class âERAElementâ and four subclasses: âComponentâ, âCriticalIssueâ, âDecisionâ and âRequirementâ. > > A while ago I removed he subclass Component, and naturally Pharo will not let me create an instance of this subclasses. However it is still listed in the ERAElement subclass collection. As shown below. > <image001.png> > > > I can test for existence of each subclass as shown below: > <image002.png> > > However the same code will not accept Component as a possible value. > > <image007.png> > > I can even create a new Subclass Component and get two (different) subclasses with the same name. > > Any thoughts as to what is going on and if so how to resolve the problem? > > Many thanks in advance for any and all feedback. > > Kind regards > Robert Briggs

Jan. 10, 2022

Ghost subclass

by Robert Briggs

Hi I currently have a problem that I am unable to resolve. I am working on a personal project. I created a Class âERAElementâ and four subclasses: âComponentâ, âCriticalIssueâ, âDecisionâ and âRequirementâ. A while ago I removed he subclass Component, and naturally Pharo will not let me create an instance of this subclasses.Â However it is still listed in the ERAElement subclass collection. As shown below. I can test for existence of each subclass as shown below: However the same code will not accept Component as a possible value. I can even create a new Subclass Component and get two (different) subclasses with the same name. Any thoughts as to what is going on and if so how to resolve the problem? Many thanks in advance for any and all feedback. Kind regards Robert Briggs

Jan. 8, 2022

FOSDEM2022

by Santiago Bragagnolo

Hello everybody! This year I was not expecting to have stand since it seemed that there was no stands at all. But i was mistaken at many levels. Not only there are stands but also i did not have to do much for ensuring participation: We are on board. This year just as 2021 because of covid fosdem is online, as well as our stand. I invite you to get yourself in the stand online, and please tellme if there are news that are too old (besides the fact that we talk about pharo8, i clearly know that :P ), and things that you would like to add. https://stands.fosdem.org/stands/pharo/ Maybe books, videos, whatever. Thanks you all!

Jan. 6, 2022

Re: Pharo-WebView

by TomaÅ¾ Turk

Dear all, Pharo-Webview works on Windows 10 64-bit and Linux 64-bit (tested on Ubuntu 20.04). The needed webview.so dynamic library is available within the repository at https://github.com/eftomi/Pharo-Webview. On Linux use headless VM. There's also a webview.dylib for MacOS if someone wants to try it (built on Monterey), however I wasn't successful on this platform, despite the fact that I tried TFWorker and TFMainThreadRunner approaches, too. I'm also not keen on Cocoa. The library itself lacks a better support for webview create-destroy mechanisms although it could be upgraded. I achieved my needed functionality and unfortunatelly don't have time to continue. Maybe I'll continue in next months, but according to my experiences so far it would be better to choose a slightly heavier but cleaner Photino (https://www.tryphotino.io/) or something else. Or maybe to work on pure Pharo approach :-) One of the interesting challenges is a double nature of Pharo - interactive and "headless" mode - meaning that the application runs without Pharo GUI. It'd be nice if both approaches would be possible. The library that I used builds on the headless idea, where the main GUI loop is supposed to be taken over by the webview, which is the main reason for "create-destroy" challenge if you use it interactively. This multiplied by USER32.DLL, Gtk3, and Cocoa ... Best wishes, Tomaz

Jan. 5, 2022

[ANN] Stargate-Consul v3.0.0 [v3.0.0] released!

by Buenos Aires Smalltalk

Jan. 4, 2022