Squashed 'third_party/boostorg/static_assert/' content from commit afe9e9d
Change-Id: Ifc70a7a9eec39aeeeddb499da8ec8aad4c632432
git-subtree-dir: third_party/boostorg/static_assert
git-subtree-split: afe9e9d7864e23d50077115d51fa8ce17fc2e8be
diff --git a/static_assert_example_2.cpp b/static_assert_example_2.cpp
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+++ b/static_assert_example_2.cpp
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+// (C) Copyright John Maddock 2000.
+// Use, modification and distribution are subject to the
+// Boost Software License, Version 1.0. (See accompanying file
+// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+// 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 RandomAccessIterator >
+RandomAccessIterator foo(RandomAccessIterator from, RandomAccessIterator /*to*/)
+{
+ // this template can only be used with
+ // random access iterators...
+ typedef typename std::iterator_traits< RandomAccessIterator >::iterator_category cat;
+ BOOST_STATIC_ASSERT((boost::is_convertible<cat, const 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;
+}
+
+
+
+
+
+
+