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Subject: Re: Any reason to use C?

Author: Gerd Isenberg

Date: 22:54:29 07/28/03

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On July 28, 2003 at 19:00:41, Dieter Buerssner wrote:

>On July 28, 2003 at 18:26:29, Gerd Isenberg wrote:
>
>>References, function inlining and namespaces are enaugh to use C++.
>
>Gerd, references is enough for me, to avoid C++. In the "old days", when I read
>code with a function call, like foo(a), I was sure, that a will be the same
>after the function call, than before. With C++, I cannot be sure anymore. If I
>want to make a changable by a function call, I use &a in C. All pretty much self
>documenting. Not anymore in C++.

Hi Dieter,

i see your point - i have no problems with references, may be due to Java.
References are very intuitive for me, but i don't use them "randomly" in
functions.
Most often the "output" paramter by reference is the first (left) one - and i
use appropriate function identifiers, implying the desired side effect.

  int bitScanAndReset(BitBoard &bb);
  void assignWithMask(int &target, int source, int mask);


>
>It may even be a performance issue. I read your suggestion about the small
>inline functions vs. macros. I basically agree. But when using reference
>paramaters (your example did), things might be very different. This might make
>it very difficult or even impossible to make a good optimization for the
>compiler.

I never found a problem so far. I guess from compilers point of view, there is
no pragmatical difference between a pointer and a reference.

Regards,
Gerd

>
>Function inlining is part of the ISO C Standard of 1999. Not all compilers
>support it.
>
>Regards,
>Dieter



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