Re: [boost] [type_traits] Interest in is_iterator type trait?

Subject: Re: [boost] [type_traits] Interest in is_iterator type trait?
From: Mathias Gaunard (mathias.gaunard_at_[hidden])
Date: 2014-08-20 08:26:05

On 19/08/14 18:49, John Maddock wrote:
>>> The intent was always to submit is_iterator to Boost, but we never got
>>> around to it. Now I need it in Boost.Filesystem, so I'd rather see it
>>> go in type traits than just sticking it into boost/filesystem/detail.
>>
>> Out of curiosity, why do you need it?
>
> One situation is inside a constructor call:
>
> struct myclass
> {
> template <class I>
> myclass(I a, I b)
> {
>     // a and b could be iterators, or could be a pair of values,
>     // we need to separate the two cases.
> }

What if your values are iterators?