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Subject: Re: [boost] BOOST_FOREACH slow?
From: Eric Niebler (eric_at_[hidden])
Date: 2008-11-17 16:37:39

Mathias Gaunard wrote:
> Eric Niebler wrote:
>> During FOEACH's review, extensive performance tests showed FOREACH was
>> only about 5% slower than the hand-coded equivalent on average.
> Why not make FOREACH as fast as hand-coded equivalents when it is possible?
> With decltype, typeof, or the MSVC hack it shouldn't be a problem. Also
> some compilers have native support for foreach-like loops.

I haven't spent a lot of time thinking about it, but I imagine making
this transparent to users would be hard. BOOST_FOREACH has documented
customization points that any alternate implementation should respect.

Eric Niebler
BoostPro Computing

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