Home - News ( United States | United Kingdom | Italy | Germany ) - Football scores

Showing content from https://cplusplus.com/reference/functional/bad_function_call/ below:

class

<functional>

Exception thrown on bad call

Empty function objects are function objects with no target callable object.

This class is derived from exception. See the exception class for the member definitions of standard exceptions.

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19

// bad_function_call example
#include <iostream>     // std::cout
#include <functional>   // std::function, std::plus, std::bad_function_call

int main () {
  std::function<int(int,int)> foo = std::plus<int>();
  std::function<int(int,int)> bar;

  try {
    std::cout << foo(10,20) << '\n';
    std::cout << bar(10,20) << '\n';
  }
  catch (std::bad_function_call& e)
  {
    std::cout << "ERROR: Bad function call\n";
  }

  return 0;
}

30
ERROR: Bad function call

exception

Standard exception class (class)

function

Function wrapper (class template)

RetroSearch is an open source project built by @garambo | Open a GitHub Issue

Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo

HTML: 3.2 | Encoding: UTF-8 | Version: 0.7.4