[range] refactor use of examples in documentation to avoid redundancy

[SVN r82344]

doc/reference/adaptors/sliced.qbk

@@ -18,29 +18,8 @@
 * [*Returned Range Category:] __random_access_range__
 
 [section:sliced_example sliced example]
-``
-#include <boost/range/adaptor/sliced.hpp>
-#include <boost/range/algorithm/copy.hpp>
-#include <boost/assign.hpp>
-#include <algorithm>
-#include <iostream>
-#include <vector>
-
-int main(int argc, const char* argv[])
-{
-    using namespace boost::adaptors;
-    using namespace boost::assign;
-
-    std::vector<int> input;
-    input += 1,2,3,4,5,6,7,8,9;
-
-    boost::copy(
-        input | sliced(2, 5),
-        std::ostream_iterator<int>(std::cout, ","));
-
-    return 0;
-}
-``
+[import ../../../test/adaptor_test/sliced_example.cpp]
+[sliced_example]
 [endsect]
 
 This would produce the output: