empty function optimizations
Thomas Kunert
kunert@physik.tu-dresden.de
Tue Jul 11 23:47:00 GMT 2000
Joe Buck wrote:
>
> > Factoring might be a fair solution for the Linux folks' empty functions.
> > That was Geert's original proposal. Unfortunately the source of my problem
> > is mostly C++ templates. I don't have control to factor out the common
> > code. Well, sure I could have control but then that is like saying "don't
> > use templates".
>
> No, this is not true. The technique you need to use is called partial
> specialization. A typical use is, say, if you have Container<T>, but
> you can use the same code for any case where T is a pointer, or T is
> a PODS (plain old data structure).
>
> See Chapter 13.5 of Stroustrup's "The C++ Programming Language, 3rd
> Edition" for a good tutorial on how to use this technique.
>
> Ideally, the STL we provide should use a lot more partial specialization;
> for example
>
IMHO, that's the wrong approach. It's better to have an optimization in
the compiler than to uglify the code. And the code gets ugly if you do
that. Why should I do what the compiler could do for me?
Regards,
Thomas
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