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

[Pharo-project] In Smalltalk you can't loose code... hum

by FranÃ§ois Tanguy

Hi, the statement is true when the code is saved in the browser. But in a workspace or in the script manager that is not true. Actually it is a feature request: You can't loose code even when you are working in the script browser. Because in the script manager has a save capability, would it be difficult to write the changes into the changes files ? Francois

Sept. 25, 2010

Re: [Pharo-project] After loading a package...all changes with "revision changed"

by Mariano Martinez Peck

On Sat, Sep 25, 2010 at 9:02 PM, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr > wrote: > > On Sep 25, 2010, at 8:25 PM, Mariano Martinez Peck wrote: > > > Hi. I am having a probem with Glorp and I really have no idea what can > be. The problem is that I load the package Glorp and just after loading, I > do a "changes" in the MC Browser and I see a lot of classes with a lot of > changes and all of them like "revison changed". This is annoying since it > doesn't let me easily see what I have really changed. > > > > To reproduce: > > > > - Load the package "Glorp" from http://www.squeaksource.com/SqueakDBX > > - Open a MC Browser, select Glorp package and press the "Changes" button > agains the ss repo. And you will see :) > > May be the image used to save the package got a problem and changed the > timestamp of the methods. > So when you merge you get changed methods. > I've just tried commiting and load them in a clean image...same problem. And if it were what you say...is there a solution? thanks mariano > > > > > Any help is really appreaciated. > > > > Thanks > > > > Mariano > > _______________________________________________ > > Pharo-project mailing list > > Pharo-project(a)lists.gforge.inria.fr > > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >

Sept. 25, 2010

Re: [Pharo-project] NativeBoost callbacks: double return values?

by Eliot Miranda

On Sat, Sep 25, 2010 at 12:06 PM, Igor Stasenko <siguctua(a)gmail.com> wrote: > On 25 September 2010 21:45, Schwab,Wilhelm K <bschwab(a)anest.ufl.edu> > wrote: > > Sig, > > > > Something that I would very much like to go on not really > understanding<g> is that complexity of returning a double, and its further > impact on callbacks. Aside from the usual myriad uses, my biggest interest > in callbacks is for numerical analysis where double return values are very > common. Is that something that you can make work by near magic? I don't > really care if they require special handling, but it would be very nice if > they are at least not very difficult to set up. > > > In short: yes. > > In long: you can always create own numeric type (like MyDouble) in > smalltalk with its own storage format/fields. > And with NativeBoost you can implement C<->smalltalk coercions for > instances of this class. > > NativeBoost type lookup logic allows you to control types and/or > aliases on a per-class basis. > So, you can still use 'double' in function specification, and then > make it to use MyDouble instances, instead of default Float. > > Btw, in Squeak Float using same storage size (64 bits) as C double, > except that it stores them in big-endian format. > In Cog VM, they are stored in little-endian, since cog runs on > little-endian machines. > Um, no. In Cog they are stored in the format of the host machine. The Cog Stack interpreter is not x86-specific. If you compile it on SPARC or big-endian PowerPC you'll find that floats are stored big-endian there-on. cheers Eliot > > > Bill > > > > _______________________________________________ > > Pharo-project mailing list > > Pharo-project(a)lists.gforge.inria.fr > > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > > > > > > -- > Best regards, > Igor Stasenko AKA sig. > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project

Sept. 25, 2010

Re: [Pharo-project] NativeBoost callbacks: double return values?

by Igor Stasenko

On 25 September 2010 21:45, Schwab,Wilhelm K <bschwab(a)anest.ufl.edu> wrote: > Sig, > > Something that I would very much like to go on not really understanding<g> is that complexity of returning a double, and its further impact on callbacks. Â Aside from the usual myriad uses, my biggest interest in callbacks is for numerical analysis where double return values are very common. Â Is that something that you can make work by near magic? Â I don't really care if they require special handling, but it would be very nice if they are at least not very difficult to set up. > In short: yes. In long: you can always create own numeric type (like MyDouble) in smalltalk with its own storage format/fields. And with NativeBoost you can implement C<->smalltalk coercions for instances of this class. NativeBoost type lookup logic allows you to control types and/or aliases on a per-class basis. So, you can still use 'double' in function specification, and then make it to use MyDouble instances, instead of default Float. Btw, in Squeak Float using same storage size (64 bits) as C double, except that it stores them in big-endian format. In Cog VM, they are stored in little-endian, since cog runs on little-endian machines. > Bill > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > -- Best regards, Igor Stasenko AKA sig.

Sept. 25, 2010

Re: [Pharo-project] [OT] NO-SLQ vs RDBMS Re: FluidDB API for Pharo

by StÃ©phane Ducasse

> > > > > You can find many topics about it in the net. > > Yes, but the net is full of idiots too. I mean...if I read the net then I should be programing in Java... > I want to hear if someone of you, someone I know, had real experience with both alternatives. And why you would choose one over the other one. > > In addition, if someone has experience with a real app using Seaside or something like that. you mean using seaside and NOSLQ db? > > > This topic is really overheated :) > > > yes, I know :) >

Sept. 25, 2010

Re: [Pharo-project] After loading a package...all changes with "revision changed"

by StÃ©phane Ducasse

On Sep 25, 2010, at 8:25 PM, Mariano Martinez Peck wrote: > Hi. I am having a probem with Glorp and I really have no idea what can be. The problem is that I load the package Glorp and just after loading, I do a "changes" in the MC Browser and I see a lot of classes with a lot of changes and all of them like "revison changed". This is annoying since it doesn't let me easily see what I have really changed. > > To reproduce: > > - Load the package "Glorp" from http://www.squeaksource.com/SqueakDBX > - Open a MC Browser, select Glorp package and press the "Changes" button agains the ss repo. And you will see :) May be the image used to save the package got a problem and changed the timestamp of the methods. So when you merge you get changed methods. > > Any help is really appreaciated. > > Thanks > > Mariano > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project

Sept. 25, 2010

Re: [Pharo-project] FluidDB API for Pharo

by StÃ©phane Ducasse

thanks jordi On Sep 25, 2010, at 8:25 PM, Jordi Delgado wrote: > oops! just fixed. Now you should be able to get it. Sorry. > > Bests, > > Jordi > > >> >> On 25 Sep 2010, at 10:22, Jordi Delgado wrote: >> >>> Hi >>> >>> I write just to let you know that we (the smalltalk.cat group) did an >>> API to interact with a nice no-SQL database called FluidDB. It has been >>> mainly the work of Sergio Garcia, but there is a little of some of us in the >>> tests and the code: >>> http://www.squeaksource.com/FluidDB.html >>> To see what this FluidDB is: >>> http://fluidinfo.com/ >>> >>> Bests, >>> >>> Jordi >> >> Sounds interesting, however the SqueakSource project has a 'Global: no access', so we can't see anything. >> >> Sven >> >> >> _______________________________________________ >> Pharo-project mailing list >> Pharo-project(a)lists.gforge.inria.fr >> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project

Sept. 25, 2010

[Pharo-project] NativeBoost callbacks: double return values?

by Schwab,Wilhelm K

Sig, Something that I would very much like to go on not really understanding<g> is that complexity of returning a double, and its further impact on callbacks. Aside from the usual myriad uses, my biggest interest in callbacks is for numerical analysis where double return values are very common. Is that something that you can make work by near magic? I don't really care if they require special handling, but it would be very nice if they are at least not very difficult to set up. Bill

Sept. 25, 2010

Re: [Pharo-project] [OT] NO-SLQ vs RDBMS Re: FluidDB API for Pharo

by Jordi Delgado

Not me. In fact, the reasons to do the FluidDB API are that we find it interesting (but not that we are not satisfied with traditional RDBMS), that the start-up is located in Barcelona and we are friends with the guys that created that start-up. If you want a more sophisticated argument of the No-SQL vs. RDBMS databases maybe someone else is able to offer good arguments. In any case, Google helps a lot in finding blogs and strong opinions concerning this discussion. Bests, Jordi > Hi. Can someone with experience in "No-SQL" databases explain me the > differences/advantages over a RDBMS and doing something like: > > create table database (key varchar() , value varchar() ) > > thanks > > mariano > > On Sat, Sep 25, 2010 at 10:30 AM, Sven Van Caekenberghe <sven(a)beta9.be>wrote: > > > > > On 25 Sep 2010, at 10:22, Jordi Delgado wrote: > > > > > Hi > > > > > > I write just to let you know that we (the smalltalk.cat group) did an > > > API to interact with a nice no-SQL database called FluidDB. It has been > > > mainly the work of Sergio Garcia, but there is a little of some of us in > > the > > > tests and the code: > > > http://www.squeaksource.com/FluidDB.html > > > To see what this FluidDB is: > > > http://fluidinfo.com/ > > > > > > Bests, > > > > > > Jordi > > > > Sounds interesting, however the SqueakSource project has a 'Global: no > > access', so we can't see anything. > > > > Sven > > > > > > _______________________________________________ > > Pharo-project mailing list > > Pharo-project(a)lists.gforge.inria.fr > > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project

Sept. 25, 2010

[Pharo-project] After loading a package...all changes with "revision changed"

by Mariano Martinez Peck

Hi. I am having a probem with Glorp and I really have no idea what can be. The problem is that I load the package Glorp and just after loading, I do a "changes" in the MC Browser and I see a lot of classes with a lot of changes and all of them like "revison changed". This is annoying since it doesn't let me easily see what I have really changed. To reproduce: - Load the package "Glorp" from http://www.squeaksource.com/SqueakDBX - Open a MC Browser, select Glorp package and press the "Changes" button agains the ss repo. And you will see :) Any help is really appreaciated. Thanks Mariano

Sept. 25, 2010