Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. — Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

This is the documentation for a snapshot of the develop branch, built from commit 3e299386d9.

Passes through anything that is already deferred.

template<
    typename T>
constraint_t< is_deferred< decay_t< T > >::value, decay_t< T > > operator()(
    T && t) const;