[boost] [functional] A new version of a selector (Boost.Select)

Hi Everyone, Is there interest in a real simple utility which chooses either the first or second element in a pair that can be used with STL algorithms? I'm attaching it with the appropriate Boost Software License. I hope this helps! -- Dean Michael Berris Software Engineer, Friendster, Inc. <dmberris@friendster.com> +639287291459