January 2015 - Pharo-users - lists.pharo.org

Re: [Pharo-users] [ANN] A simple debugger for stepping though bytecodes.

by Tudor Girba

Hi, What do you mean by a Roassal plugin? You mean a debugger dedicated to debugging Roassal problems, or you mean Roassal visualizations for various debuggers? To both the answer is that it is easy to do. If you want to see an example of using a Roassal visualization inside a debugger, you can take a look at the Glamour Debugger, but essentially you just have to create a browser like any other and put in there a Roassal presentation. Cheers, Doru On Thu, Jan 15, 2015 at 10:40 PM, Alexandre Bergel <alexandre.bergel(a)me.com> wrote: > I am quite interested in plugin a Roassal visualization to a debugger. > I will discuss with Rosario, but maybe you have worked on something on > your side? Would it be hard to have this? > > Cheers, > Alexandre > > > > On Jan 15, 2015, at 6:22 PM, Andrei Chis <chisvasileandrei(a)gmail.com> > wrote: > > > > Hi all, > > > > We've just made a simple debugger for stepping through bytecodes. It's > still just the first version so a lot of things can still be improved. > > > > More info here: > https://chisvasileandrei.wordpress.com/2015/01/15/a-bytecode-debugger/ > > > > Cheers, > > Andrei > > -- > _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: > Alexandre Bergel http://www.bergel.eu > ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. > > > > > -- www.tudorgirba.com "Every thing has its own flow"

Jan. 16, 2015

Re: [Pharo-users] Notification on GC of an object?

by Johan Fabry

As Iâve been asked, Iâll clarify a bit more. When I said it worked before I was actually wrong because I had forgotten to remove some alternative cleanup code (the alternative works but itâs like using a cannon to kill a fly). This is part of the interpreter for Live Robot Programming that Miguel and I are working on. As part of that we need a data structure that holds scopes, for variables but also for other things. It turns out that for the variables part we can map rather nicely to classes, which gives us a bunch of advantages. So for each scope I generate a class. The scope keeps that class in a âvarsâ instance variable (there are never any instances of these classes BTW). When the scope is garbage collected I want to remove the class from the system. So I put #finalize in the scope with the idea to remove the class, but it turns out that âvarsâ is always nil. So in the end it did not work out ... > On Jan 15, 2015, at 15:10, Henrik Johansen <henrik.s.johansen(a)veloxit.no> wrote: > > Removing a class you're an instance of might be a bit fishy as well. (as I understand were to be the case if you only implement #finalize), though it'd be nice with some details why it "didn't work out" for Johan. ---> Save our in-boxes! http://emailcharter.org <--- Johan Fabry - http://pleiad.cl/~jfabry PLEIAD lab - Computer Science Department (DCC) - University of Chile

Jan. 16, 2015

Re: [Pharo-users] [ANN] A simple debugger for stepping though bytecodes.

by Alexandre Bergel

I am quite interested in plugin a Roassal visualization to a debugger. I will discuss with Rosario, but maybe you have worked on something on your side? Would it be hard to have this? Cheers, Alexandre > On Jan 15, 2015, at 6:22 PM, Andrei Chis <chisvasileandrei(a)gmail.com> wrote: > > Hi all, > > We've just made a simple debugger for stepping through bytecodes. It's still just the first version so a lot of things can still be improved. > > More info here: https://chisvasileandrei.wordpress.com/2015/01/15/a-bytecode-debugger/ > > Cheers, > Andrei -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

Jan. 15, 2015

Roassal and super large screen

by Alexandre Bergel

Dear all, We have reached a milestone today. We have been able to make Roassal display on a super large screen gently provided by INRIA Chile. If there would be a contest on displaying Roassal-made visualizations on the largest (and most expensive) super-screen ever, then we will be on a good run. >From the technical point of view, we export SVG and use a cluster-friendly SVG renderer. This expands the range of what can be achieved. Cheers, The Object Profile Team -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

Jan. 15, 2015

[ANN] A simple debugger for stepping though bytecodes.

by Andrei Chis

Hi all, We've just made a simple debugger for stepping through bytecodes. It's still just the first version so a lot of things can still be improved. More info here: https://chisvasileandrei.wordpress.com/2015/01/15/a-bytecode-debugger/ Cheers, Andrei

Jan. 15, 2015

Re: [Pharo-users] Could we keep Pharo-dev for Pharo-dev?

by Hilaire

Indeed, as far as it is about announcing, it makes sense to announce it on pharo-users only. Hilaire Le 15/01/2015 10:07, kilon alios a Ã©crit : > does that mean that announcing new pharo tools that are included in the > standard pharo distribution should go to pharo-users ? > -- Dr. Geo - http://drgeo.eu iStoa - http://istoa.drgeo.eu

Jan. 15, 2015

Re: [Pharo-users] Making objects persistent

by Paul DeBruicker

Here is another approach: http://forum.world.st/Best-practices-available-for-Seaside-Gemstone-tp27210… sergio_101 wrote > I am building a seaside application, and am in the process of building my > models and unit tests. > > I have a few objects that build up my data by creating objects. > > when i run the data creation methods, everything is fine. immediately > afterward, since these objects to belong to anything, they are cleaned up > by garbage collection. > > is there a way to create these objects so that they persist? if this is > possible, how would you go about deleting such a tenacious object? > > thanks! -- View this message in context: http://forum.world.st/Making-objects-persistent-tp4799638p4799776.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Jan. 15, 2015

Re: [Pharo-users] Stackoverflow, was: [Pharo-dev] Could we keep Pharo-dev for Pharo-dev?

by Martin BÃ¤hr

Excerpts from Daniel Lyons's message of 2015-01-15 19:47:22 +0100: > The Prolog section does pretty well by having a small but significant > community that watch the Prolog tag like hawks. something like rss2email could be used to forward stackoverflow questions to the list, so that they'll be noticed by more people to be answered. > The big advantage of Stack Overflow is that googling your question finds > it there with an actual answer. yes, when i search for a problem on google, stackoverflow search results are my favourite choices to look at. greetings, martin. -- eKita - the online platform for your entire academic life -- chief engineer eKita.co pike programmer pike.lysator.liu.se caudium.net societyserver.org secretary beijinglug.org mentor fossasia.org foresight developer foresightlinux.org realss.com unix sysadmin Martin BÃ¤hr working in china http://societyserver.org/mbaehr/

Jan. 15, 2015

Re: [Pharo-users] Stackoverflow, was: [Pharo-dev] Could we keep Pharo-dev for Pharo-dev?

by Daniel Lyons

kilon alios writes: > Yeah StackOverflow has serious issues with moderation but still that does > not change the fact that is a popular site where tons of developers go > there to find answers to their questions. I asked my own questions on SO > about Pharo and so far I have not been disappointed. The Prolog section does pretty well by having a small but significant community that watch the Prolog tag like hawks. There are still "drive-by moderation" incidents but by and large it isn't a huge problem. There also is no general Prolog mailing list around which to organize, so a substantial community is able to organize just around Stack Overflow instead. The big advantage of Stack Overflow is that googling your question finds it there with an actual answer. Googling your question about Pharo often lands you in the middle of a conversation on the mailing list, replicated on some random site without enough context or useful navigation, while the actual answers may be buried deep in some thread. Or the question never got answered, but people went on to talk about different things, but Google sees the question in the subject repeated many times and assumes this is a useful page. Stack Overflow doesn't let this kind of thing happen. Things tend to move so quickly with Pharo that an answer on the mailing list from 2011 is often practically useless today. That would be a problem with old Pharo questions on Stack Overflow as well, except that Stack Overflow doesn't make a point of drawing your attention to the age of the answer. It's good and bad; good that things are moving quickly and improving, bad in that a lot of that knowledge has a short shelf-life. This phenomenon seems to be shared with Smalltalk, very few books go into much detail about what's in the image, and the ones that do are all greatly outdated because what's in the image changes fast. Ruby and Javascript are also like this. Prolog is almost ideal for Stack Overflow because everybody who shows up is asking the same questions (taking the same classes at the same universities, probably), and the system hasn't changed much in the last thirty years. Stack Overflow is good at fossilizing knowledge, but not every system benefits from that. -- Daniel Lyons

Jan. 15, 2015

Re: [Pharo-users] Stackoverflow, was: [Pharo-dev] Could we keep Pharo-dev for Pharo-dev?

by kilon alios

Yeah StackOverflow has serious issues with moderation but still that does not change the fact that is a popular site where tons of developers go there to find answers to their questions. I asked my own questions on SO about Pharo and so far I have not been disappointed. On Thu, Jan 15, 2015 at 4:54 PM, Stephan Eggermont <stephan(a)stack.nl> wrote: > Serge wrote: > >Shall we move the discussion to pharo-users instead ? > > Yep. > > >I was not aware of that. Do you have recent examples about this behaviour > ? > > The last closed question was fine. Flagging it just gets clueless > moderator replies: > "declined - The question really needs to be fleshed out. > Including the code for the rectangle morph would help a lot." > > An earlier one was > Command pattern in smalltalk [closed] (you might not be able to see that > as it was deleted). > > Of the 10 most popular smalltalk questions, at least 8 would be closed > using current moderation standards. > > There is not 1 question from last year amongst the 50 most popular > questions. > In the top 100 there are 2, and the most popular one is about Objective C. > The most popular question from last year gets 7 votes. That means there are > not enough smalltalkers on SO to be able to reopen questions. > > The gaming system basically values popularity of answers, > not correctness. It reinforces majority choices. > > Phil wrote: > >Traffic increases as a sign of traction/engagement and we want to silence > things. Yeah sure. > > > >Put a tag in the title and filter on that. > > Some channels are more effective than others. > Stackoverflow is not an effective channel. > > Ignoring it is not smart. > Answer questions and point people to the > mailing lists. > > Stephan > > >

Jan. 15, 2015