std::function::function - cppreference.com

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`function();`	(1)	(desde C++11)

`function( std::nullptr_t );`	(2)	(desde C++11)

`function( const function& f );`	(3)	(desde C++11)

`function( function&& f );`	(4)	(desde C++11)

`template< class F > function( F f );`	(5)	(desde C++11)

`template< class Alloc > function( std::allocator_arg_t, const Alloc& alloc );`	(6)	(desde C++11)

`template< class Alloc > function( std::allocator_arg_t, const Alloc& alloc, std::nullptr_t );`	(7)	(desde C++11)

`template< class Alloc > function( std::allocator_arg_t, const Alloc& alloc, const function& f );`	(8)	(desde C++11)

`template< class Alloc > function( std::allocator_arg_t, const Alloc& alloc, function&& f );`	(9)	(desde C++11)

`template< class F, class Alloc > function( std::allocator_arg_t, const Alloc& alloc, F f );`	(10)	(desde C++11)

Constrói um std::function a partir de uma variedade de fontes.

Original:

Constructs a std::function from a variety of sources.

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@ 1, 2, 7 @ Criar uma função vazia.

Original:

@1, 2, 7@ Create an empty function.

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@ 3, 8 @ Crie uma cópia do f.

Original:

@3, 8@ Create a copy of f.

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@ 4, 9 @ Mova o conteúdo da f em *this.

Original:

@4, 9@ Move the contents of f into *this.

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@ 5, 10 @ Mova o objeto Callable f em *this.

Original:

@5, 10@ Move the Callable object f into *this.

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Parâmetros

f	-	a função de objeto usado para inicializar `this` Original: the function object used to initialize `this` The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
alloc	-	um `Allocator` usado para alocação de memória interna Original: an `Allocator` used for internal memory allocation The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Notas

6-10)

Construtores que têm um primeiro parâmetro de std::allocator_arg_t tipo deve ter um alloc segundo argumento A tipo que é um Allocator. Este alocador é usado para criar memória para quaisquer estruturas de dados internas que a function pode usar.

Original:

Constructors that have a first parameter of type std::allocator_arg_t must have a second argument alloc of type A that is an Allocator. This allocator is used to create memory for any internal data structures that the function might use.

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5, 10) O F tipo deve ser CopyConstructible eo f objecto deve ser Callable. A função de objeto resultante que é criada será vazia se f é um ponteiro de função NULL, um ponteiro NULL ao membro, ou se é uma f std::function e !f == true. O f argumento é movido para o objeto função resultante.

Original:

5, 10) The type F should be CopyConstructible and the object f should be Callable. The resulting function object that is created will be empty if f is a NULL function pointer, a NULL pointer to member, or if f is a std::function and !f == true. The argument f is moved into the resulting function object.

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Exceções

1-2)

3-5)

(Nenhum)

Original:

(none)

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6-7)

8-10)

(Nenhum)

Original:

(none)

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Exemplo

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