Re: Cocoa/Objective-C's Relative Performance
Re: Cocoa/Objective-C's Relative Performance
- Subject: Re: Cocoa/Objective-C's Relative Performance
- From: Clark Cox <email@hidden>
- Date: Thu, 13 Jan 2005 09:23:23 -0500
On Thu, 13 Jan 2005 15:19:37 +0100, Steven Kramer
<email@hidden> wrote:
>
> Op 13-jan-05 om 13:00 heeft Alun ap Rhisiart het volgende geschreven:
>
> >
> > Ivan S. Kourtev wrote:
> >
> >> Perhaps I am missing the point and these Cocoa data structures are
> >> only optimal for use with GUI widgets (of which there are never
> >> millions). I am starting to think that for maximum performance (I am
> >> talking about data sets with hundreds of millions of elements) one
> >> would always need a custom non-Cocoa (and not even Objectivee-C
> >> because of the objc_msgsend() overhead) data structures.
> > Maybe it's time to Think Different? Although you don't often see them
> > used in commerce, there are libraries designed specifically to deal
> > with very large data sets, often encountered by scientists in fields
> > such as earth sciences, meteorology, astronomy and so on. They are not
> > simply data structures but a library of routines which internally act
> > on the data structures.
> >
>
>
> Alan Odgaard has written ObjC wrappers for C++ STL containers (whose
> operation complexities are well-specified and whose implementations are
> often close to optimal, or at least better than what you or I could
> come up with on a short timescale ;-).
>
> http://www.top-house.dk/~aae0030/cocoastl/
That looks more like *STL* wrappers to *Cocoa* containers, which seems
to be the opposite of what the OP needs.
--
Clark S. Cox III
email@hidden
http://www.livejournal.com/users/clarkcox3/
http://homepage.mac.com/clarkcox3/
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