...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::cnv::charconv cnv; BOOST_TEST(-1 == convert<int>( " 12", cnv(arg::skipws = false)).value_or(-1)); BOOST_TEST(12 == convert<int>( " 12", cnv(arg::skipws = true)).value_or(-1));