std::experimental::get_underlying
Min standard notice:
Retrieves a reference to the pointer-like object stored in a propagate_const.
# Declarations
template< class T >
constexpr T& get_underlying( propagate_const<T>& pt ) noexcept;
(library fundamentals TS v2)
template< class T >
constexpr const T& get_underlying( const propagate_const<T>& pt ) noexcept;
(library fundamentals TS v2)
# Parameters
pt: a propagate_const object
# Return value
A reference to the pointer-like object stored in pt.