Re: [Boost-users] Iterator Range, sub range of a desired size

On 29-10-2012 08:33, Neil Groves wrote:

On Mon, Oct 29, 2012 at 4:40 AM, David Kimmel mailto:davidwkimmel@gmail.com> wrote:

Is there a function in BOOST, given a starting point and a desired size, that returns iterators for a (sub) range?

There are two classes in Boost.Range that achieve this purpose. The first, boost::iterator_range<Iterator> can be used to hold sub-ranges. It is not directly constructible from the form firstIterator, count since this would either require that the Iterator is a model of the RandomAccessConcept or would provide sloppy performance guarantees.

We could consider to add an make_iterator_range which took the count, and then make a static assertion about random access iterators. It seems to me that iterator + count is a quite normal way of creating a range. -Thorsten