Boost C++ Libraries: Ticket #3792: Boolean Metafunction for determining whether a type has been registered https://svn.boost.org/trac10/ticket/3792 <p> The typeof library should have a boolean metafunction which can be used to determine whether a type has been registered or not. This would greatly aid in using typeof in template metaprogramming. </p> en-us Boost C++ Libraries /htdocs/site/boost.png https://svn.boost.org/trac10/ticket/3792 Trac 1.4.3