2009/7/29 Mariano Martinez Peck <marianop...@gmail.com>: > > On Tue, Jul 28, 2009 at 5:39 PM, Igor Stasenko <siguc...@gmail.com> wrote: >> >> I think that all such kind of queries (like isXXXPlatform) should be >> not included and not used in a well-designed system. >> If you want some capability - then you should ask directly for it, >> irrespectively on what platform you are currently running. > > I am agree. I really believe in the phrase "tell don't ask". However, I have > a couple of things to say: > > 1) It is not as easy as it seems. If you want to delegate to another object > and be polymorphic regarding the platform you must reify a couple of classes > (in your slash it is easy because you have the File hierarchy). I mean, you > cannot put everything in the Platform class. And this must be done in every > place. You must really understand that piece of code to change it. I can do > this in my projects, but I don't know about to do it everywhere.
The class OSPlatform is quite small. I would vote for: - implementing the following methods OSPlatform>>isMacOSX ^ false OSPlatform>>isWin32 ^ false OSPlatform>>isUnix ^ false and then MacOSXPlatform>>isMacOSX ^ true UnixPlatform>>isUnix ^ true Win32Platform>>isWin32 ^ true - when you want to test the platform, just do: OSPlatform current isMacOSX or OSPlatform current isWin32 What do you think? -- Damien Cassou http://damiencassou.seasidehosting.st "Lambdas are relegated to relative obscurity until Java makes them popular by not having them." James Iry _______________________________________________ Pharo-project mailing list Pharo-project@lists.gforge.inria.fr http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project
