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// (C) Copyright John Maddock 2000.
// Permission to copy, use, modify, sell and
// distribute this software is granted provided this copyright notice appears
// in all copies. This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
// See http://www.boost.org for most recent version including documentation.
#include <iterator>
#include <list>
#include <deque>
#include <boost/static_assert.hpp>
#include <boost/type_traits.hpp>
template <class RandonAccessIterator >
RandonAccessIterator foo(RandonAccessIterator from, RandonAccessIterator)
{
// this template can only be used with
// random access iterators...
typedef typename std::iterator_traits< RandonAccessIterator >::iterator_category cat;
BOOST_STATIC_ASSERT((boost::is_convertible<cat*, std::random_access_iterator_tag*>::value));
//
// detail goes here...
return from;
}
int main()
{
std::deque<int> d;
std::list<int> l;
foo(d.begin(), d.end()); // OK
foo(l.begin(), l.end()); // error
return 0;
}
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