Re: [boost] [Range] initial feedback on return values of algorithms

From: Thorsten Ottosen (tottosen_at_[hidden])
Date: 2006-02-03 08:02:28

Neal Becker wrote:
> For what it's worth, the use case I most often employ is:
> 
> template<typename out_t, typename in_t>
> out_t func (in_t const& in) {
>   out = out_t (boost::size (in));
>   do something
>   return out;
> }
> 
> I realize this isn't always efficient, but it's very convenient.  Also, I
> hope my preferred compiler (gcc-4.1) will perform RVO.

This reminds me thar there is another reason for not supplying "output 
ranges":

    out_t = boost::copy_range<out_t>( rng | xxx | yyy );

and this is optimal with RVO.

-Thorsten