Hello Wolfgang, Tuesday, May 5, 2009, 8:27:17 PM, you wrote:
>> i know two problems in Haskell/GHC that require OO-loke features - >> extensible exceptions and GUI widget types hierarchy > Note that you don’t need different types for different kinds of GUI widgets if > you use Functional Reactive Programming (FRP). You need different types if > you use OO because you have to explicitely modify widgets after you have > created them, and what modifications you are allowed to do, depends on the > kind of widget. With FRP, you specify the behavior over all time when you > create the widget, so no need for later method calls. (i don't know anything about FRP) i think it doesn't change anything. the main reason why i need common operations is because i write generic procedures. another erason os what i can't remember 100 individual 'setSize' operations for 100 types of widgets. so we need to have some generic names, short of they are used due initialization or later -- Best regards, Bulat mailto:bulat.zigans...@gmail.com _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
