Re: [Boost-users] [Range] Range adaptors and compatibility with non-adapted iterators

Subject: Re: [Boost-users] [Range] Range adaptors and compatibility with non-adapted iterators
From: Thorsten Ottosen (thorsten.ottosen_at_[hidden])
Date: 2012-01-11 11:59:47

Den 11-01-2012 06:23, John M. Dlugosz skrev:
> Consider something like this:
>
> themap_type::iterator search_for (int val)
> {
> return boost::find_if (themap|map_values, my_predicate(val));
> }

[snip]

> auto it2= boost::find_if (themap|map_values, my_predicate(val));
> if (it2 == themap::end()) // same problem!

As stated, iter.base() should work.

That said, it is still somewhat of a usability problem.

We should seriously consider to add

A. an implicit conversion operator to the underlying iterator (explicit 
in C++0x)

B. overloaded comparison opearators between iterators and wrapped iterators.

-Thorsten