[boost] [range] range library proposal implementation rev.2

Hi, all A new version of Oven, a range library proposal implementation, has been uploaded to Boost.Vault/Algorithm. The file: http://tinyurl.com/2axp2l Range Library Proposal: http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2005/n1871.html An example "infinite sequence of factorials": void test() { BOOST_AUTO(factorials, expression(counting(1, max_count)|scanned(1, regular(lambda::_1 * lambda::_2))) ); int const answer[] = { 1,1,2,6,24,120,720,5040,40320,362880 }; BOOST_CHECK( equals(factorials|taken(10), answer) ); } This library is highly preliminary, but moderately tested. Any feedback appreciated. Regards, -- Shunsuke Sogame