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
Replaces *this
with v, changing the
kind to v.kind()
and destroying any previous contents.
field& operator=( constfield_view& v);
Basic guarantee. Internal allocations may throw.
Invalidates references to *this obtained by as_xxx and get_xxx functions,
but not the ones obtained by field::operator field_view().
*this
is guaranteed to be valid even after v
becomes invalid.