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

Re: [Pharo-users] DoubleLinkedList vs LinkedList vs Collection

by Peter UhnÃ¡k

> > DoubleLinkedList was added to help the implementation of [LRU|TTL]Cache. > It was kept small and independent. Does that mean that I probably shouldn't touch it? Because when I wanted to use DDL I ran into a problem that once I add something to the list, I can no longer access the Links. LinkedList has "firstLink/lastLink", but this is missing in DoubleLinkedList -- is this design decision (to keep it small), or nobody needed it until now? Peter

April 14, 2015

Re: [Pharo-users] DoubleLinkedList vs LinkedList vs Collection

by Marcus Denker

> On 14 Apr 2015, at 14:00, Sven Van Caekenberghe <sven(a)stfx.eu> wrote: > > Peter, > >> On 14 Apr 2015, at 13:52, Peter UhnÃ¡k <i.uhnak(a)gmail.com> wrote: >> >> I was surprised to learn that DoubleLinkedList is descendant of Object, while LinkedList is descendant of SequencableCollection. Is there a particular reason behind this? Are they really so conceptually different that DLL is not even considered a collection? >> >> Thanks, >> Peter > > DoubleLinkedList was added to help the implementation of [LRU|TTL]Cache. It was kept small and independent. > > Inheriting from [Sequenceable]Collection is a larger responsibility, entails more requirements. > > I would not be against this, although I am not 100% sure it is easy (some methods return the link nodes, not the elements, a distinction unknown to collections in general - LinkedList is a bit ugly in this respect too). In any case, it would have to be supported by enough tests. It could be a nice project for Pharo 5. One problem with LinkedList is that it is used by the scheduler and carefully written to be intererrupt-check free in some (undocumented) casesâ¦ in the past this has already lead to very bad side-effects when people wanted to improve it or change it. Marcus

April 14, 2015

Re: [Pharo-users] DoubleLinkedList vs LinkedList vs Collection

by Sean P. DeNigris

Peter UhnÃ¡k wrote > Are they really so conceptually different > that DLL is not even considered a collection? I just reread GOF and reinforced an important idea. Although we often conflate the two, types and classes are not the same. Inheritance is an implementation detail about avoiding duplication by sharing code. Unfortunately, Smalltalk may encourage the conflation because: 1. interfaces are not well-defined 2. and, the tools, being very class-centric, and maybe in reaction to #1, make it tempting to subclass just to make the relationships clearer whether there is code savings or not So the question is whether they are implementation-ally similar enough to justify subclassing. Their conceptual similarity only means they should share the same interface i.e. respond to the same set of messages. ----- Cheers, Sean -- View this message in context: http://forum.world.st/DoubleLinkedList-vs-LinkedList-vs-Collection-tp481950… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

April 14, 2015

Re: [Pharo-users] DoubleLinkedList vs LinkedList vs Collection

by Sven Van Caekenberghe

Peter, > On 14 Apr 2015, at 13:52, Peter UhnÃ¡k <i.uhnak(a)gmail.com> wrote: > > I was surprised to learn that DoubleLinkedList is descendant of Object, while LinkedList is descendant of SequencableCollection. Is there a particular reason behind this? Are they really so conceptually different that DLL is not even considered a collection? > > Thanks, > Peter DoubleLinkedList was added to help the implementation of [LRU|TTL]Cache. It was kept small and independent. Inheriting from [Sequenceable]Collection is a larger responsibility, entails more requirements. I would not be against this, although I am not 100% sure it is easy (some methods return the link nodes, not the elements, a distinction unknown to collections in general - LinkedList is a bit ugly in this respect too). In any case, it would have to be supported by enough tests. It could be a nice project for Pharo 5. Sven

April 14, 2015

DoubleLinkedList vs LinkedList vs Collection

by Peter UhnÃ¡k

I was surprised to learn that DoubleLinkedList is descendant of Object, while LinkedList is descendant of SequencableCollection. Is there a particular reason behind this? Are they really so conceptually different that DLL is not even considered a collection? Thanks, Peter

April 14, 2015

Re: [Pharo-users] Gitfiletree unstable on Windows

by Thierry Goubier

Hi Jan, It's ProcessWrapper. It uses a dll called ProcessWrapperPlugin.dll (downloaded when you install ProcessWrapper). I'm not sure where is the source code. Thierry 2015-04-14 12:25 GMT+02:00 Jan BlizniÄenko <bliznjan(a)fit.cvut.cz>: > Sorry for replying after so much time... > > What inteface is it? Is there any way I could help to find source of the > problem? > > Jan > > > Thierry Goubier wrote > > Hi Jan, > > > > there is a chance the problem is in the interface GitFileTree uses to > > call git on windows. > > > > Thierry > > > > Le 31/03/2015 17:53, Jan B. a Ã©crit : > >> This way it loads, but unfortunately VM crashes anyway. > >> > >> > >> Jigyasa Grover wrote > >>> Hey Jan > >>> > >>> Try this: > >>> " Metacello new > >>> baseline: 'FileTree'; > >>> repository: > >>> > 'filetree:///C:/Users/User/Pharo/....../dalehenrich-filetree-7f998e5/repository'; > >>> load: 'Git' > >>> " > >>> > >>> Put in the path to the repository folder. > >> > >> > >> > >> > >> > >> -- > >> View this message in context: > >> > http://forum.world.st/Gitfiletree-unstable-on-Windows-tp4816354p4816405.html > >> Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > >> > >> > >> > > > > > > -- > View this message in context: > http://forum.world.st/Gitfiletree-unstable-on-Windows-tp4816354p4819490.html > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > >

April 14, 2015

Re: [Pharo-users] Gitfiletree unstable on Windows

by Jan BlizniÄenko

Sorry for replying after so much time... What inteface is it? Is there any way I could help to find source of the problem? Jan Thierry Goubier wrote > Hi Jan, > > there is a chance the problem is in the interface GitFileTree uses to > call git on windows. > > Thierry > > Le 31/03/2015 17:53, Jan B. a Ã©crit : >> This way it loads, but unfortunately VM crashes anyway. >> >> >> Jigyasa Grover wrote >>> Hey Jan >>> >>> Try this: >>> " Metacello new >>> baseline: 'FileTree'; >>> repository: >>> 'filetree:///C:/Users/User/Pharo/....../dalehenrich-filetree-7f998e5/repository'; >>> load: 'Git' >>> " >>> >>> Put in the path to the repository folder. >> >> >> >> >> >> -- >> View this message in context: >> http://forum.world.st/Gitfiletree-unstable-on-Windows-tp4816354p4816405.html >> Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >> >> >> -- View this message in context: http://forum.world.st/Gitfiletree-unstable-on-Windows-tp4816354p4819490.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

April 14, 2015

Re: [Pharo-users] [ANN] ArchLinux pharo-vm / pharo-launcher packages

by Markus Schlager

Hi Laurent, On Tue, 18 Mar 2014, Laurent Laffont wrote: > There's also a pharo-launcher package that depends on pharo-vm: > > $ yaourt pharo-launcher Right know this fails raising a 404 File Not Found error: --2015-04-13 22:51:47-- https://ci.inria.fr/pharo-contribution/job/PharoLauncherFinalUserImage/last… AuflÃ¶sen des Hostnamens Â»ci.inria.fr (ci.inria.fr)Â« â¦ 193.51.193.223 Verbindungsaufbau zu ci.inria.fr (ci.inria.fr)|193.51.193.223|:443 â¦ verbunden. HTTP-Anforderung gesendet, auf Antwort wird gewartet â¦ 404 Not Found 2015-04-13 22:51:47 FEHLER 404: Not Found. Markus

April 13, 2015

Re: [Pharo-users] [ANN] ArchLinux pharo-vm / pharo-launcher packages

by rohit sharma

hi sean, I don't have much idea about yaourt but you can always download using latest available version from http://smalltalkhub.com/#!/~Pharo/PharoLauncher using command "ConfigurationOfPharoLauncher loadBleedingEdge". Greetings, rohit On Mon, Apr 13, 2015 at 11:33 PM, Sean P. DeNigris <sean(a)clipperadams.com> wrote: > laurent laffont wrote > > $ yaourt pharo-vm-latest > > Does this download the stable or development version of Pharo? > > > > ----- > Cheers, > Sean > -- > View this message in context: > http://forum.world.st/ANN-ArchLinux-pharo-vm-pharo-launcher-packages-tp4749… > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > >

April 13, 2015

Re: [Pharo-users] [ANN] ArchLinux pharo-vm / pharo-launcher packages

by Sean P. DeNigris

laurent laffont wrote > $ yaourt pharo-vm-latest Does this download the stable or development version of Pharo? ----- Cheers, Sean -- View this message in context: http://forum.world.st/ANN-ArchLinux-pharo-vm-pharo-launcher-packages-tp4749… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

April 13, 2015