November 2015 - Pharo-users

Re: [Pharo-users] graph library in Pharo

by Alexandre Bergel

Yes, I see your point. Some years ago, GraphViz was bridged with Mondrian / Roassal. I do not know whether GraphViz would solve your problem or not. OSProcess was used then. Let us know how you plan to continue on that front. This is very important. Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. > On Nov 29, 2015, at 9:42 PM, Peter UhnÃ¡k <i.uhnak(a)gmail.com> wrote: > > I need at least (mixed/upward)-planarity testing, embedding, spanning > tree, flow, assignment, ... > > I've seen the Moose-Algos, but from what I need it contains only > Kruskal (spanning tree). > > So ideally I would like to just load a project instead having to > implement them all by myself, because most of them are very complex. > > Peter > > On Sun, Nov 29, 2015 at 11:35 PM, Alexandre Bergel > <alexandre.bergel(a)me.com> wrote: >> There are a few algorithms in the moose distribution. Maybe you can check them. >> Which algo do you really need? >> >> Cheers, >> Alexandre >> >> >>> On Nov 29, 2015, at 5:29 PM, Peter Uhnak <i.uhnak(a)gmail.com> wrote: >>> >>> Hi, >>> >>> is there any graph library for pharo with algorithms for planarity >>> testing, spanning trees, flow costs, etc.? >>> >>> Thanks, >>> -- >>> Peter >>> >> >> -- >> _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: >> Alexandre Bergel http://www.bergel.eu >> ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. >> >> >> >> >

Nov. 30, 2015

Help needed: old issues issue tracker entries

by marcus.denker＠inria.fr

Hi, The issue tracker has 658 open issues. This number is more or less constant. We are fixing and integrating *a lot*, alone the last 7 days we managed to close 89 issue tracker entries. But the older entries see not much work. Of course one reason is that everything fixable gets fixed and only hard cases remainâ¦ but cases can be âdifficultâ for many reasons. I would be nice if everyone could help and have a look at older issues: -> Still relevant? -> Maybe already fixed? -> Is the description good? -> What is the next action that needs to be done? And keep in mind that the issue tracker is not a TODO list. If you see something odd and put and issue âoh, this looks oddâ but there is no action for a year, does it really make sense to keep that issue open? Every open issue takes energy away from the others. So please check if issues make sense of this kind: -> âIt would be nice ifâ but not even important enough for the submitter to do -> TODO issues that are huge projects in themselves -> â¦. It would be nice if *you* would check the issue that you have been involved with the last months and see what is needed to solve them. Marcus

Nov. 30, 2015

Re: [Pharo-users] How fuel deals with circular reference ?

by Sven Van Caekenberghe

Both Fuel and STON deal correctly with circular references and structure sharing. However, and this is an important difference, since FUEL is saving everything it sees (everything your objects point to), it often saves a lot (way more than you expect). STON (and JSON, XML, ..) are much less powerful, they require you to carefully think about and design the domain model objects that you want to serialise/persistent (i.e. make sure they don't point to system stuff, or at least skip these). The result will be much cleaner and smaller output. > On 30 Nov 2015, at 12:41, Dimitris Chloupis <kilon.alios(a)gmail.com> wrote: > > I have a class A that has an instance variable the references an instance of Class B , but also Class B has an instance variable the references an instance of Class A. Basically its a GUI that references its model and the same model referencing the same instance of GUI. > > How Fuel deals with such scenario because I saw that it created an output of 1.5 mbs for several instances of my model class ? Is there any danger of having such circular references or it does not matter because afterall they are just pointers ?

Nov. 30, 2015

How fuel deals with circular reference ?

by Dimitris Chloupis

I have a class A that has an instance variable the references an instance of Class B , but also Class B has an instance variable the references an instance of Class A. Basically its a GUI that references its model and the same model referencing the same instance of GUI. How Fuel deals with such scenario because I saw that it created an output of 1.5 mbs for several instances of my model class ? Is there any danger of having such circular references or it does not matter because afterall they are just pointers ?

Nov. 30, 2015

Re: [Pharo-users] Pharo Consortium New Gold Member: Thales

by Tudor Girba

Great news! For everyone not directly involved in the Consortium: The money collected from memberships go towards the infrastructure of Pharo in form of engineering time. This is a key effort to make Pharo a sustainable platform for the long run. That is why these pieces of news are so important. Doru > On Nov 26, 2015, at 2:42 PM, marcus.denker(a)inria.fr wrote: > > The Pharo Consortium is very happy to announce that Thales > has joined the Consortium as an Gold Member. > > About > - Thales: https://www.thalesgroup.com > - 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 > -- www.tudorgirba.com "Value is always contextual."

Nov. 30, 2015

Re: [Pharo-users] When exactly an object gets deleted from the system ?

by Dimitris Chloupis

and of course you are both correct , I have a circular reference, basically an object A referencing object B which references object A. No wonder why is not gc. Thanks for helping me out spotting this. On Mon, Nov 30, 2015 at 12:56 PM Ferlicot D. Cyril <cyril.ferlicot(a)gmail.com> wrote: > Le 30/11/2015 11:40, Dimitris Chloupis a Ã©crit : > > I am wondering when an instance of a class is garbage collected and > > deleted from the system. > > > > is there a way to manually deleted it ? > > If there is no Object that reference your object you can force a Garbage > collect with "Smalltalk garbageCollect". If your object is still here > you can try to see what point to it with "(X allInstances collectAsSet: > #pointersTo) inspect". > > When the reference is spotted you can try to remove it then garbage > collect again. > > -- > Cyril Ferlicot > > http://www.synectique.eu > > 165 Avenue Bretagne > Lille 59000 France > >

Nov. 30, 2015

Re: [Pharo-users] When exactly an object gets deleted from the system ?

by Esteban Lorenzano

> On 30 Nov 2015, at 11:55, Ferlicot D. Cyril <cyril.ferlicot(a)gmail.com> wrote: > > Le 30/11/2015 11:40, Dimitris Chloupis a Ã©crit : >> I am wondering when an instance of a class is garbage collected and >> deleted from the system. >> >> is there a way to manually deleted it ? > > If there is no Object that reference your object you can force a Garbage > collect with "Smalltalk garbageCollect". If your object is still here > you can try to see what point to it with "(X allInstances collectAsSet: > #pointersTo) inspect". > > When the reference is spotted you can try to remove it then garbage > collect again. forcing a garbage collection is not a recommended procedure. Of course you can do it while testing/developing/etc., but you must not use it as a part of your code :) Esteban > > -- > Cyril Ferlicot > > http://www.synectique.eu > > 165 Avenue Bretagne > Lille 59000 France >

Nov. 30, 2015

Re: [Pharo-users] When exactly an object gets deleted from the system ?

by Ferlicot D. Cyril

Le 30/11/2015 11:40, Dimitris Chloupis a Ã©crit : > I am wondering when an instance of a class is garbage collected and > deleted from the system. > > is there a way to manually deleted it ? If there is no Object that reference your object you can force a Garbage collect with "Smalltalk garbageCollect". If your object is still here you can try to see what point to it with "(X allInstances collectAsSet: #pointersTo) inspect". When the reference is spotted you can try to remove it then garbage collect again. -- Cyril Ferlicot http://www.synectique.eu 165 Avenue Bretagne Lille 59000 France

Nov. 30, 2015

Re: [Pharo-users] When exactly an object gets deleted from the system ?

by Esteban Lorenzano

Hi, > On 30 Nov 2015, at 11:40, Dimitris Chloupis <kilon.alios(a)gmail.com> wrote: > > I am wondering when an instance of a class is garbage collected and deleted from the system. > > is there a way to manually deleted it ? no, that beats the purpose of a garbage collector. butâ¦ it should be cleaned quite fast, if it is not, most probably you are keeping a reference somewhere. Esteban

Nov. 30, 2015

When exactly an object gets deleted from the system ?

by Dimitris Chloupis

I am wondering when an instance of a class is garbage collected and deleted from the system. is there a way to manually deleted it ?

Nov. 30, 2015