Subject: Re: [boost] [offtopic] C++11 useful trick
From: Mathias Gaunard (mathias.gaunard_at_[hidden])
Date: 2012-07-02 14:18:18
On 02/07/2012 19:29, Eric Niebler wrote:
> Yeah, it's booo-ring. ;-) Also, it needlessly instantiates O(N)
> templates. And why write both a function template *and* a class template
> when the function template alone will do? Now you have to maintain two
> computations in parallel. I hate writing metafunctions to compute things
> the compiler already knows. And in less trivial examples, the
> metafunction wouldn't be so easy to write. BTW, only the implementation
> of back needs to go in a struct. The user-visible function could fwd to it.
Have you done benchmarks that shows your approach is significantly faster?
Use of a C++11 feature just for the sake of it doesn't seem like such a
good idea to me. Especially since BOOST_TYPEOF in the return type tends
to be quite fragile, so it cannot really be emulated.