std::experimental::propagate_const<T>::operator=

< cpp‎ | experimental‎ | propagate const

constexpr propagate_const& operator=( propagate_const&& p ) = default;	(1)	(library fundamentals TS v2)
template<class U> constexpr propagate_const& operator=( propagate_const<U>&& pu );	(2)	(library fundamentals TS v2)
template<class U> constexpr propagate_const& operator=( U&& u );	(3)	(library fundamentals TS v2)
propagate_const& operator=( const propagate_const& ) = delete;	(4)	(library fundamentals TS v2)

Let t_ designate the private data member that is the wrapped pointer-like object.

1) Explicitly defaulted move assignment operator that move assigns this->t_ from p.t_.

2) Assigns std::move(pu.t_) to this->t_.
This overload participates in overload resolution only if U is implicitly convertible to T.

3) Assigns std::forward<U>(u) to this->t_.
This overload participates in overload resolution only if U is implicitly convertible to T and std::decay_t<U> is not a specialization of propagate_const.

4) Copy assignment operator is explicitly deleted. propagate_const is non-copyable.

Parameters

p	-	another `propagate_const` object to move from
pu	-	another `propagate_const` object of a different specialization to move from
u	-	another object to assign to the contained pointer

Return value

*this.