Re: [boost] [bimap][multi_index][range] sub_range vs std::pair<iter, iter>

shunsuke skrev:

Matias Capeletto wrote:

...

1) Do you think that the range functions should return a sub_range<map_type> instead of a std::pair<iter,iter>?

'boost::iterator_range' or 'std::pair' seems a good choice. 'boost::sub_range' propagates const-ness. 'boost::begin(x.range(...,...))' returns a "constant" iterator, because a rvalue cannot be bound to non-const-reference. In fact, I still don't know where 'boost::sub_range' is useful.

Well, one thing I am a little worried about is that 'boost::iterator_range' doesn't work with 'boost::is_convertible'.

Could you explain please? Thanks -Thorsten