Boost.RangeEx merged into Boost.Range

[SVN r60897]

include/boost/range/algorithm_ext/overwrite.hpp

@@ -0,0 +1,46 @@
+// Boost.Range library
+//
+//  Copyright Neil Groves 2009. Use, modification and
+//  distribution is 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)
+//
+// For more information, see http://www.boost.org/libs/range/
+//
+#ifndef BOOST_RANGE_ALGORITHM_EXT_OVERWRITE_HPP_INCLUDED
+#define BOOST_RANGE_ALGORITHM_EXT_OVERWRITE_HPP_INCLUDED
+
+#include <boost/range/config.hpp>
+#include <boost/range/difference_type.hpp>
+#include <boost/range/begin.hpp>
+#include <boost/range/end.hpp>
+#include <boost/assert.hpp>
+
+namespace boost
+{
+	template< class SinglePassRange1, class SinglePassRange2 >
+	inline void overwrite( const SinglePassRange1& from, SinglePassRange2& to )
+	{
+		BOOST_DEDUCED_TYPENAME range_iterator<SinglePassRange1>::type
+			i = boost::begin(from), e = boost::end(from);
+
+		BOOST_DEDUCED_TYPENAME range_iterator<SinglePassRange2>::type
+			out = boost::begin(to);
+		
+#ifndef NDEBUG
+        BOOST_DEDUCED_TYPENAME range_iterator<SinglePassRange2>::type
+            last_out = boost::end(to);
+#endif
+
+		for( ; i != e; ++out, ++i )
+        {
+#ifndef NDEBUG
+            BOOST_ASSERT( out != last_out
+                && "out of bounds in boost::overwrite()" );
+#endif
+			*out = *i;
+        }
+	}
+}
+
+#endif // include guard