std::experimental::function::operator=
From cppreference.com
< cpp | experimental | function
| function& operator=( const function& other );
|
(1) | (library fundamentals TS) |
| function& operator=( function&& other );
|
(2) | (library fundamentals TS) |
| function& operator=( std::nullptr_t );
|
(3) | (library fundamentals TS) |
| template< class F >
function& operator=( F&& f ); |
(4) | (library fundamentals TS) |
| template< class F >
function& operator=( std::reference_wrapper<F> f ); |
(5) | (library fundamentals TS) |
Assigns a new target to std::experimental::function. In the description below, let ALLOCATOR_OF(f) be the allocator specified in the construction of f, or std::allocator<char>() if no allocator was specified.
1) Assigns a copy of target of
other, as if by executing function(std::allocator_arg, ALLOCATOR_OF(*this), other).swap(*this);
2) Moves the target of
other to *this, as if by executing function(std::allocator_arg, ALLOCATOR_OF(*this), std::move(other)).swap(*this);. other is in a valid state with an unspecified value.
3) Destroys the target of *this. *this is empty after the call. The memory resource returned by
get_memory_resource() after the assignment is equivalent to the memory resource before the assignment, but the address may change.
4) Sets the target of *this to the callable
f, as if by executing function(std::allocator_arg, ALLOCATOR_OF(*this),std::forward<F>(f)).swap(*this);. This operator does not participate in overload resolution unless f is Callable for argument types Args... and return type R.
5) Sets the target of *this to a copy of
f, as if by executing function(std::allocator_arg, ALLOCATOR_OF(*this), f).swap(*this);
[edit] Parameters
| other | - | another std::experimental::function object to copy or move from
|
| f | - | a callable to initialize the target with |
| Type requirements | ||
-
F must meet the requirements of Callable.
|
||
[edit] Return value
*this
[edit] Exceptions
1-2) (none)
3)
noexcept specification:
noexcept
4-5) (none)