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# std::function::target

From cppreference.com
< cpp‎ | utility‎ | functional‎ | function

template< class T > T* target(); | (1) | (since C++11)
template< class T > const T* target() const; | (2) | (since C++11)

Returns a pointer to the stored callable function target.

### [edit] Parameters

(none)

### [edit] Return value

A pointer to the stored function if `target_type`() == typeid(T), otherwise a null pointer.

### [edit] Exceptions

`noexcept` specification:
noexcept

### [edit] Example

Run this code

    #include <functional>
    #include <iostream>

    void normal_fun()
    {
       std::cout << "hello\n";
    }

    int main()
    {
      using fptr = void(*)();

      fptr fun = normal_fun; //pointer to function

      std::function<void()> f = fun;

      fun = *f.target<fptr>();
      //I know that f keeps a fptr object, then I invoke target<fptr> to make a copy
      //of the object
      fun();

      std::cout << std::boolalpha << (f.target<int>() == nullptr) << '\n';
      //f doesn't keep an object of type int
    }

Output:

    hello
    true

### [edit] See also

target_type | obtains the typeid of the stored target of a std::function (public member function) [edit]

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