Re: [Boost-users] iterator_adaptor usage question

Subject: Re: [Boost-users] iterator_adaptor usage question
From: Jeffrey Lee Hellrung, Jr. (jeffrey.hellrung_at_[hidden])
Date: 2012-03-11 23:53:49

On Sun, Mar 11, 2012 at 8:27 PM, John M. Dlugosz <mpbecey7gu_at_[hidden]>wrote:

> What is a good way to create both an iterator and a const iterator while
> only having to specify all my custom behavior once?
>

Maybe template your iterator on the base iterator, and dispatching when
necessary depending on whether that base iterator is the const iterator or
the mutable iterator? E.g.,

template< class Base >
struct my_iterator
    : boost::iterator_adaptor< Base >
{ };

typedef my_iterator< base_iterator > iterator;
typedef my_iterator< base_const_iterator > const_iterator;

HTH,

- Jeff