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List:       kde-optimize
Subject:    Re: qobject_cast
From:       Dirk Mueller <mueller () kde ! org>
Date:       2005-11-12 11:48:50
Message-ID: 200511121248.51379.mueller () kde ! org
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On Saturday 12 November 2005 11:18, Olivier Goffart wrote:

> After having doing some test, it seems that qobject_cast is 3 times faster
> than dynamic_cast.

that heavily depends on the compiler ;) The main difference is that 
qobject_cast more often works accross DSO boundaries, even if LTDL_LOCAL is 
used for dlopen'ing the module. 

also, dynamic_cast works in more cases than qobject_cast works (which relies 
on the types inheriting QObject iirc). 

-- 
Dirk//\
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