41 lines
1021 B
C++
41 lines
1021 B
C++
// (C) Copyright John Maddock 2000.
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// Use, modification and distribution are subject to the
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// Boost Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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// See http://www.boost.org for most recent version including documentation.
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#include <boost/static_assert.hpp>
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#include <boost/type_traits.hpp>
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#include <iterator>
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#include <list>
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#include <deque>
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template <class RandomAccessIterator >
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RandomAccessIterator foo(RandomAccessIterator from, RandomAccessIterator /*to*/)
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{
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// this template can only be used with
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// random access iterators...
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typedef typename std::iterator_traits< RandomAccessIterator >::iterator_category cat;
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BOOST_STATIC_ASSERT((boost::is_convertible<cat, const std::random_access_iterator_tag&>::value));
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//
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// detail goes here...
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return from;
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}
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int main()
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{
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std::deque<int> d;
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std::list<int> l;
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foo(d.begin(), d.end()); // OK
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//foo(l.begin(), l.end()); // error
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return 0;
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}
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