June 2010 - Pharo-dev - lists.pharo.org

Re: [Pharo-project] Hash values

by Levente Uzonyi

On Wed, 2 Jun 2010, Henrik Sperre Johansen wrote: > On 02.06.2010 00:15, Alexandre Bergel wrote: >> Hi! >> >> Apparently in Pharo 1.1, hash values may be greater than 4096. What is the >> range of the hash values? >> >> Cheers, >> Alexandre >> >> _______________________________________________ >> Pharo-project mailing list >> Pharo-project(a)lists.gforge.inria.fr >> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > Hash values could always be greater than 4096 :) > Identity hashes can't, but they are scaled in 1.1, to avoid bad clustering That's not true. You may be surprised, but the value of #identityHash can be any SmallInteger. Just try this: {SmallInteger minVal. SmallInteger maxVal} collect: #identityHash. > for objects not redefining hash. > Basically they're multiplied by 2^18, which gives the largest possible range > while still keeping all small integers. > See ProtoObject>>identityHash for details, old identityHash is now > basicIdentityHash. This may cause compatibility problems for packages which implement custom hashes or custom hashed collections. I think Magma will be affected by this, though I didn't check the code. Levente > Cheers, > Henry > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >

June 2, 2010

Re: [Pharo-project] Hash values

by Alexandre Bergel

>> > Hash values could always be greater than 4096 :) > Identity hashes can't, but they are scaled in 1.1, to avoid bad clustering for objects not redefining hash. > Basically they're multiplied by 2^18, which gives the largest possible range while still keeping all small integers. > See ProtoObject>>identityHash for details, old identityHash is now basicIdentityHash. > Cheers, Thanks for the update Henry! Cheers, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

June 1, 2010

Re: [Pharo-project] Hash values

by Henrik Sperre Johansen

On 02.06.2010 00:15, Alexandre Bergel wrote: > Hi! > > Apparently in Pharo 1.1, hash values may be greater than 4096. What is the range of the hash values? > > Cheers, > Alexandre > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project Hash values could always be greater than 4096 :) Identity hashes can't, but they are scaled in 1.1, to avoid bad clustering for objects not redefining hash. Basically they're multiplied by 2^18, which gives the largest possible range while still keeping all small integers. See ProtoObject>>identityHash for details, old identityHash is now basicIdentityHash. Cheers, Henry

June 1, 2010

[Pharo-project] Hash values

by Alexandre Bergel

Hi! Apparently in Pharo 1.1, hash values may be greater than 4096. What is the range of the hash values? Cheers, Alexandre

June 1, 2010

Re: [Pharo-project] Can I use Projects in Pharo?

by Jochen Riekhof

Hi Stef... Thank you for the welcome and quick answer! > you cannot anymore. We have not finished to curve it out and you trust us that if we remove it this is for good reasons. Sure I understand that cleanup is important to get a stable and maintainable platform. When I understand correctly this is one of the main goals of Pharo :-). However, regardless of implementation, the functionality delivered by projects is great. Are you planning something new in place of the old projects? (For example my current main tool for work is Intellij IDEA (Java) and one of it's great features is the possibility to define multiple tasks per project, each with an own set of open files, breakpoints etc. Also you can associate such a task with a version control change-set So you can switch contexts with a click and immediately continue working on a task where you left it). Ciao ...Jochen Am 01.06.2010 um 23:11 schrieb StÃ©phane Ducasse: > > On Jun 1, 2010, at 10:42 PM, Jochen Riekhof wrote: > >> Hi... >> >> my first post here, so hello everyone! > > Welcome! > >> I started to play with Pharo for a few days now and I am really impressed. The only thing I really miss from Squeak is the possibility to create projects (Open... - morphic project - in Squeak)? Is this somehow possible in Pharo? > > no :) > you cannot anymore. We have not finished to curve it out and you trust us that if we remove it this is for good reasons. > > Stef > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project

June 1, 2010

Re: [Pharo-project] Can I use Projects in Pharo?

by StÃ©phane Ducasse

On Jun 1, 2010, at 10:42 PM, Jochen Riekhof wrote: > Hi... > > my first post here, so hello everyone! Welcome! > I started to play with Pharo for a few days now and I am really impressed. The only thing I really miss from Squeak is the possibility to create projects (Open... - morphic project - in Squeak)? Is this somehow possible in Pharo? no :) you cannot anymore. We have not finished to curve it out and you trust us that if we remove it this is for good reasons. Stef

June 1, 2010

[Pharo-project] Can I use Projects in Pharo?

by Jochen Riekhof

Hi... my first post here, so hello everyone! I started to play with Pharo for a few days now and I am really impressed. The only thing I really miss from Squeak is the possibility to create projects (Open... - morphic project - in Squeak)? Is this somehow possible in Pharo? Ciao ...Jochen

June 1, 2010

Re: [Pharo-project] Help and Prof. Stef browsers

by laurent laffont

On Tue, Jun 1, 2010 at 8:29 PM, Schwab,Wilhelm K <bschwab(a)anest.ufl.edu>wrote: > Hello all, > > In prodding the 1.1 beta, I noted the help and Prof Stef browsers. Is > there any tutorial information on how they were built? They do some very > useful things (splitters, layout, trees) and deserve careful study. > Hi Bill, for splitters and layout: http://pharocasts.blogspot.com/2010/01/basic-ui-building.html for trees: http://pharocasts.blogspot.com/2010/01/treemorph-based-package-browser.html HelpBrowser>>initWindow is a good example too. Laurent Laffont http://pharocasts.blogspot.com/ http://magaloma.blogspot.com/ > > Bill > > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >

June 1, 2010

[Pharo-project] Memory Monitor

by Alexandre Bergel

Hi! I produced a new version which now display more information. Feedback are welcome Cheers, Alexandre

June 1, 2010

[Pharo-project] Help and Prof. Stef browsers

by Schwab,Wilhelm K

Hello all, In prodding the 1.1 beta, I noted the help and Prof Stef browsers. Is there any tutorial information on how they were built? They do some very useful things (splitters, layout, trees) and deserve careful study. Bill

June 1, 2010