...one of the most highly
regarded and expertly designed C++ library projects in the
world. — Herb Sutter and Andrei
polymorphic_cast was suggested
by Bjarne Stroustrup in "The C++ Programming Language".
polymorphic_downcast was contributed
by Dave Abrahams.
was contributed by Boris
by Antony Polukhin.
for references was contributed by Julien Delacroix.
numeric_cast that was
contributed by Kevlin
Henney is now superseded by the Boost
Numeric Conversion Library