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std::function

From cppreference.com
 
 
 
Function objects
Operator wrappers
Negators
Bind
bind(C++11)
is_bind_expression(C++11)
is_placeholder(C++11)
_1, _2, _3, ...(C++11)
Function wrappers
mem_fn(C++11)
function(C++11)
bad_function_call(C++11)
Reference wrappers
reference_wrapper(C++11)
ref
cref
(C++11)
(C++11)
Deprecated binders and adaptors
unary_function(deprecated)
binary_function(deprecated)
ptr_fun(deprecated)
pointer_to_unary_function(deprecated)
pointer_to_binary_function(deprecated)
mem_fun(deprecated)
mem_fun_t
mem_fun1_t
const_mem_fun_t
const_mem_fun1_t
(deprecated)
(deprecated)
(deprecated)
(deprecated)
mem_fun_ref(deprecated)
mem_fun_ref_t
mem_fun1_ref_t
const_mem_fun_ref_t
const_mem_fun1_ref_t
(deprecated)
(deprecated)
(deprecated)
(deprecated)
binder1st
binder2nd
(deprecated)
(deprecated)
bind1st
bind2nd
(deprecated)
(deprecated)
 
 
Defined in header <functional>
template< class >
class function; /* undefined */
(since C++11)
template< class R, class... Args >
class function<R(Args...)>
(since C++11)

Class template std::function is a general-purpose polymorphic function wrapper. Instances of std::function can store, copy, and invoke any callable target -- functions, lambda expressions, bind expressions, or other function objects.

Contents

[edit] Member types

Type Definition
result_type R
argument_type T if sizeof...(Args)==1 and T is the first and only type in Args...
first_argument_type T1 if sizeof...(Args)==2 and T1 is the first of the two types in Args...
second_argument_type T2 if sizeof...(Args)==2 and T2 is the second of the two types in Args...

[edit] Member functions

constructs a new std::function instance
(public member function)
destroys a std::function instance
(public member function)
assigns the contents
(public member function)
swaps the contents
(public member function)
assigns a new target
(public member function)
checks if a valid target is contained
(public member function)
invokes the target
(public member function)
Target access
obtains the typeid of the stored target of an std::function
(public member function)
obtains a pointer to the stored target of an std::function
(public member function)

[edit] Non-member functions

specializes the std::swap algorithm
(function template) [edit]
compares an std::function with std::nullptr
(function template)

[edit] Helper classes

specializes the std::uses_allocator type trait
(class template specialization) [edit]

[edit] See also

the exception thrown when invoking an empty std::function
(class) [edit]
(C++11)
binds an object to a pointer to its member function to form independent function object
(function template) [edit]