Re: [Boost-users] [iterators] NULL pointer initialization and comparison using iterator_facade

From: Scott McMurray (me22.ca+boost_at_[hidden])
Date: 2008-04-22 11:33:48

On Tue, Apr 22, 2008 at 10:43 AM, Lang Stefan <SLang_at_[hidden]> wrote:
>  I have a big problem though: The project I am working on is quite big
>  and I intend to replace a particular typedef (currently simply a pointer
>  to a struct) with this iterator class. There are two kinds of
>  instructions though that my iterator class currently can't cope with:
>
>  1. Initializing a 'pointer' with NULL (in other words, I need a
>  constructor with one argument of type int, but only in case that
>  argument's value is 0)
>

How about some really weird pointer type?  If you did a member
function type that doesn't actually exist, you should be able to
construct with NULL, but nothing else.