std::pointer_to_unary_function

 

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template<     class Arg,     class Result > class pointer_to_unary_function : public std::unary_function<Arg, Result>;		(until C++17) (deprecated since C++11)

std::pointer_to_unary_function is a function object that acts as a wrapper around a unary function.

Member functions

(constructor)	constructs a new pointer_to_unary_function object with the supplied function (public member function)
operator()	calls the stored function (public member function)

std::pointer_to_unary_function::pointer_to_unary_function

explicit pointer_to_unary_function( Result (*f)(Arg) );

Constructs a pointer_to_unary_function function object with the stored function f.

Parameters

f

-

pointer to a function to store

std::pointer_to_unary_function::operator()

Result operator()( Arg x ) const;

Calls the stored function.

Parameters

x

-

argument to pass to the function

Return value

The value returned by the called function.

See also

pointer_to_binary_function (until C++17)	adaptor-compatible wrapper for a pointer to binary function (class template)
ptr_fun (until C++17)	creates an adaptor-compatible function object wrapper from a pointer to function (function template)