std::function::function
From cppreference.com
< cpp | utility | functional | function
| function(); |
(1) | (since C++11) |
| function( std::nullptr_t ); |
(2) | (since C++11) |
| function( const function& other ); |
(3) | (since C++11) |
| function( function&& other ); |
(4) | (since C++11) |
| template< class F > function( F f ); |
(5) | (since C++11) |
| template< class Alloc > function( std::allocator_arg_t, const Alloc& alloc ); |
(6) | (since C++11) |
| template< class Alloc > function( std::allocator_arg_t, const Alloc& alloc, |
(7) | (since C++11) |
| template< class Alloc > function( std::allocator_arg_t, const Alloc& alloc, |
(8) | (since C++11) |
| template< class Alloc > function( std::allocator_arg_t, const Alloc& alloc, |
(9) | (since C++11) |
| template< class F, class Alloc > function( std::allocator_arg_t, const Alloc& alloc, F f ); |
(10) | (since C++11) |
Constructs a std::function from a variety of sources.
1-2) Creates an empty function.
3-4) Copies (3) or moves (4) the target of
other to the target of *this. If other is empty, *this will be empty after the call too.5) Initializes the target with a copy of
f. If f is a null pointer to function or null pointer to member, *this will be empty after the call.6-10) Same as (1-5) just that
alloc is used to allocate memory for any internal data structures that the function might use.[edit] Parameters
| other | - | the function object used to initialize *this |
| f | - | a callable used to initialize *this |
| alloc | - | an Allocator used for internal memory allocation
|
| Type requirements | ||
-F must meet the requirements of Callable and CopyConstructible.
| ||
-Alloc must meet the requirements of Allocator.
| ||
[edit] Exceptions
1-2)
3-5) (none)
6-7)
8-10) (none)
[edit] Example
| This section is incomplete Reason: no example |
