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 b5267c6e8a.

Replaces *this with a NULL, changing the kind to null and destroying any previous contents.

field&
operator=(
    std::nullptr_t) noexcept;

No-throw guarantee.

Invalidates references obtained by as_xxx and get_xxx functions, but not the ones obtained by field::operator field_view().