std::function::operator=

 

C++

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initializer_list (C++11)

bitset

hash (C++11)

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rel_ops::operator!=rel_ops::operator>rel_ops::operator<=rel_ops::operator>=

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pair

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piecewise_construct (C++11)

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swap

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declval (C++11)

 

Function objects

Function wrappers
function (C++11)
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_1, _2, _3, ... (C++11)
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plus minus negate multiplies divides modulus logical_and logical_or logical_not	equal_to not_equal_to greater less greater_equal less_equal bit_and bit_or bit_xor bit_not (C++14)
Negators
unary_negate binary_negate	not1 not2
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mem_fun_tmem_fun1_tconst_mem_fun_tconst_mem_fun1_t (until C++17)(until C++17)(until C++17)(until C++17)
mem_fun_ref (until C++17)
mem_fun_ref_tmem_fun1_ref_tconst_mem_fun_ref_tconst_mem_fun1_ref_t (until C++17)(until C++17)(until C++17)(until C++17)
binder1stbinder2nd (until C++17)(until C++17)
bind1stbind2nd (until C++17)(until C++17)

 

std::function

Member functions

function::function

function::~function

function::operator=

function::swap

function::assign

function::operator bool

function::operator()

function::target_type

function::target

Non-member functions

operator==operator!=

std::swap(std::function)

Helper classes

std::uses_allocator<std::function>

 

function& operator=( const function& other );	(1)	(since C++11)
function& operator=( function&& other );	(2)	(since C++11)
function& operator=( std::nullptr_t );	(3)	(since C++11)
template< class F > function& operator=( F&& f );	(4)	(since C++11)
template< class F > function& operator=( std::reference_wrapper<F> f );	(5)	(since C++11)

Assigns a new target to std::function.

1) Assigns a copy of target of other, as if by executing function(other).swap(*this);

2) Moves the target of other to *this. other is in a valid state with an unspecified value.

3) Drops the current target. *this is empty after the call.

4) Moves the callable f to the target of *this, as if by executing function(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. (since C++14)

5) Assigns a copy of f, as if by executing function(f).swap(*this);

Parameters

other	-	another std::function object to copy the target of
f	-	a callable to initialize the target with
Type requirements
- F must meet the requirements of Callable.

Return value

*this

Exceptions

1-2) (none)

3)

(none)	(until C++17)
noexcept specification:   noexcept	(since C++17)

4) (none)

5)

noexcept specification:  

noexcept

  

See also

assign

assigns a new target (public member function)