fork download
copy 
  1. #include <iostream>
  2. #include <map>
  3.  
  4. struct O
  5. {
  6.   std::map<size_t,double(*)()> m;
  7.   double operator[](size_t index)
  8.   {
  9.     return m[index]();
  10.   }
  11. };
  12.  
  13. double mydouble = 1.25;
  14.  
  15. double myFunction()
  16. {
  17.   return mydouble;
  18. }
  19.  
  20. int main()
  21. {
  22.   O myArray;
  23.   myArray.m[2] = &myFunction;
  24.   std::cout << myArray[2] << std::endl;
  25.   return 0;
  26. }
  27.  
Success #stdin #stdout 0s 3032KB
comments ()
stdin
copy 
Standard input is empty
stdout
copy 
1.25
https://ideone.com/XGpEWn
language:
C++14 (gcc 8.3)
created:
12 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!