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  1. #include <limits> 
  2. #include <type_traits> 
  3.  
  4. template<typename T, typename Callable> 
  5. void foreach_int(Callable call) 
  6. { 
  7.   static_assert(std::is_integral<T>::value, "T has to be an integral type"); 
  8.   T t = std::numeric_limits<T>::min(); 
  9.   while(1) 
  10.   { 
  11.     call(t); 
  12.     if(t == std::numeric_limits<T>::max()) break; 
  13.     ++t; 
  14.   } 
  15. } 
  16.  
  17. #include <iostream> 
  18. int main() 
  19. { 
  20.   foreach_int<char>([](char val){ std::cout << (int)val << std::endl; }); 
  21.   return 0; 
  22. }
Success #stdin #stdout 0s 2884KB
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https://ideone.com/Gndjl
language:
C++14 (gcc 8.3)
created:
13 years ago
visibility:
public

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