[Haskell-cafe] Useful IDE features -

[Ketil Malde]

On Thu, 2007-06-21 at 00:20 +0100, Claus Reinke wrote:
> >> in practice, overloading introduces overhead that might hamper
> > performance.
> > 
> > You mean overloading in general, so using type classes? Is this comparable
> > to the Java/C#/C++ overhead with virtual methods, so one extra level of
> > indirection before the function gets called? Or is it much worse?
> 
> usually, don't worry about it. if a program really is slow, still don't
> worry about it, but find out where that program is slow. only if a
> program is slow in an area that uses overloading, see:

Is this something that could be caught by profiling?  Could profiling
somehow notice what specific type a polymorphic function is called with,
and more or less explicitly suggest which functions to specialize?

(I guess I'll soon be asking for profile directed optimization :-)

-k