Re: [boost] [Review][bimap]

From: Thorsten Ottosen (thorsten.ottosen_at_[hidden])
Date: 2007-02-26 16:33:11

Matias Capeletto wrote:
> On 2/26/07, Thorsten Ottosen <thorsten.ottosen_at_[hidden]> wrote:

>>What if you make the members of the view pairs something like
>>
>>template< class Pair& >
>>struct get_first
>>{
>>    Pair& p_;
>>    operator typename Pair::first_type&() const
>>    { return p_.first; }
>>};
>>
>>?
> 
> 
> It is a possible way to achieve the same results. The problem with it
> is that the size of the resulting pair will be two references bigger.
> This option was analyze and discarded for that reason.

Not understood. A pair of references pair<T&,U&>
requires one to store 2 references. My skecth above
would also require 2 references.

A smart compiler might know it is the same reference store twice
snd do some optimization.

-Thorsten