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  1. #include <iostream>
  2. #include <boost/bind.hpp>
  3. using namespace std;
  4.  
  5. template<class function_type>
  6. void retry(function_type function)
  7. {
  8.     const int numOfRetries = 3;
  9.     int i = 1;
  10.     do
  11.     {
  12.         //Invoke the function that was passed as argument
  13.         if(function())
  14.         {
  15.           //Invocation is successful
  16.           cout << "\t try number#" << i <<" Successful \n";
  17.           break;
  18.         }
  19.  
  20.         //Invocation is Not successful
  21.         cout << "\t try number#" << i <<" Not Successful \n";
  22.         ++i;
  23.  
  24.         if (i == 4)
  25.         {
  26.           cout<< "\t failed invocation!";
  27.         }
  28.  
  29.     }while (i <= numOfRetries);
  30. }
  31.  
  32. int Permit(int i)
  33. {
  34.     //Permit succeeds the second retry
  35.     static int x = 0;
  36.     x++;
  37.     if (x == 2 && i ==1 ) return 1;
  38.     else return 0;
  39. }
  40.  
  41. int main()
  42. {
  43.     int i = 1;
  44.     retry(boost::bind(Permit, i));
  45. }
Success #stdin #stdout 0.02s 2724KB
comments (?)
stdin
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Standard input is empty
stdout
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	 try number#1 Not Successful 
	 try number#2 Successful
https://ideone.com/tZN87N
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
public

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