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From: Bart Samwel <bsamwel@wi.leidenuniv.nl>
Subject: Re: What is wrong with OO ?
Date: 1997/01/10
Message-ID: <32D64433.41C6@wi.leidenuniv.nl>#1/1
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Date: 1997-01-10T00:00:00+00:00
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> Assembler will ALWAYS be the most efficient language.  The more you
> abstract the problem, the more you "generalize" the solution to a
> given problem, the more you necessarily give up in efficiency.  C
> takes a minimal 3x hit on integer arithmetic, 10x on more complex
> stuff; and OO, because of the overhead interpreting where
> to send things, is 10x on top of that.

IMO this number is only a valid approximation for Smalltalk and other 
dynamically typed OO languages. Statically typed languages like C++
(hybrid, but supporting OO) and Eiffel (pure OO) achieve a much lower
impact on performance than 10x. I won't give any numbers because I
don't have them, but I know most number-crunching usually runs at
very acceptable speed in these languages; a bit, but not much slower
than C.