Re: [Boost-Users] Member Function Iterator Adaptor

From: Duane Murphy (duanemurphy_at_[hidden])
Date: 2003-02-03 20:54:34

--- At Mon, 3 Feb 2003 17:37:19 -0800, Duane Murphy wrote:

>I'm trying to build a member function iterator adaptor. (Maybe there
>already is one and I'm not finding it?) This would be an iterator adaptor
>where the adaptor returns the result of calling a member function of the
>base iterator.
>
>I think this is a pretty straightforward iterator adaptor. What I am
>missing is the ability to work out the value_type of the iterator. This
>would be the return type of the member function being used.
>
>I thought I could use boost::call_traits< MemberFunction >::value_type,
>but that returns the entire type of the member function. I think
>call_traits<> is not what I am looking for.
>
>Pointers or suggests would be greatly welcomed.

Naturally one has to ask the question before one can find the answer.

No iterator adaptor is needed. Use transform_iterator_adaptor with mem_fn().

Much easier.

 ...Duane