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std::function::function

Материал из cppreference.com

 
 
 
Функция объектов
Функция обертки
Original:
Function wrappers
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function(C++11)
mem_fn(C++11)
bad_function_call(C++11)
Привязка
Original:
Bind
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bind(C++11)
is_bind_expression(C++11)
is_placeholder(C++11)
_1, _2, _3, ...(C++11)
Ссылка обертки
Original:
Reference wrappers
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reference_wrapper(C++11)
ref
cref
(C++11)
(C++11)
Оператор обертки
Original:
Operator wrappers
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Negators
Original:
Negators
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Устаревшие связующих и адаптеры
Original:
Deprecated binders and adaptors
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unary_function(устарело)
binary_function(устарело)
ptr_fun(устарело)
pointer_to_unary_function(устарело)
pointer_to_binary_function(устарело)
mem_fun(устарело)
mem_fun_t
mem_fun1_t
const_mem_fun_t
const_mem_fun1_t
(устарело)
(устарело)
(устарело)
(устарело)
mem_fun_ref(устарело)
mem_fun_ref_t
mem_fun1_ref_t
const_mem_fun_ref_t
const_mem_fun1_ref_t
(устарело)
(устарело)
(устарело)
(устарело)
binder1st
binder2nd
(устарело)
(устарело)
bind1st
bind2nd
(устарело)
(устарело)
 
std::function
Член функций
Original:
Member functions
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function::function
function::~function
function::operator=
function::swap
function::assign
function::operator bool
function::operator()
function::target_type
function::target
Не являющиеся членами функций
Original:
Non-member functions
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operator==
operator!=
std::swap(std::function)
Вспомогательные классы
Original:
Helper classes
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std::uses_allocator<std::function>
 
function();
(1) (начиная с C++11)
function( std::nullptr_t );
(2) (начиная с C++11)
function( const function& f );
(3) (начиная с C++11)
function( function&& f );
(4) (начиная с C++11)
template< class F >
function( F f );
(5) (начиная с C++11)
template< class Alloc >
function( std::allocator_arg_t, const Alloc& alloc );
(6) (начиная с C++11)
template< class Alloc >

function( std::allocator_arg_t, const Alloc& alloc,

          std::nullptr_t );
(7) (начиная с C++11)
template< class Alloc >

function( std::allocator_arg_t, const Alloc& alloc,

          const function& f );
(8) (начиная с C++11)
template< class Alloc >

function( std::allocator_arg_t, const Alloc& alloc,

          function&& f );
(9) (начиная с C++11)
template< class F, class Alloc >
function( std::allocator_arg_t, const Alloc& alloc, F f );
(10) (начиная с C++11)
Создает std::function из различных источников.
Original:
Constructs a std::function from a variety of sources.
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@ 1, 2, 7 @ Создайте пустую функцию.
Original:
@1, 2, 7@ Create an empty function.
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@ 3, 8 @ Создайте копию f.
Original:
@3, 8@ Create a copy of f.
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@ 4, 9 @ Перемещение содержимого f в *this.
Original:
@4, 9@ Move the contents of f into *this.
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@ 5, 10 @ Переместить Callable объекта f в *this.
Original:
@5, 10@ Move the Callable object f into *this.
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Содержание

[править] Параметры

f -
Функция объект используется для инициализации *this
Original:
the function object used to initialize *this
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alloc -
Allocator используется для внутреннего распределения памяти
Original:
an Allocator used for internal memory allocation
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[править] Notes

6-10)
Конструкторы, которые имеют первый параметр типа std::allocator_arg_t должны иметь второго alloc аргумент типа A, который Allocator. Этот распределитель используется для создания памяти для любых внутренних структур данных, которые могли бы использовать function.
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) тип F должны быть CopyConstructible и объект f должны быть Callable. В результате функции объекта, созданного будет пустым, если f является нулевым указателем функции, NULL указателя на член, или если f является std::function и !f == true. Аргумент f перемещается в результате объект функции.
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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[править] Исключения

1-2)
noexcept-спецификация:  
noexcept
  (начиная с C++11)
3-5)
(Нет)
Original:
(none)
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6-7)
noexcept-спецификация:  
noexcept
  (начиная с C++11)
8-10)
(Нет)
Original:
(none)
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[править] Пример