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  1. #include <iostream>
  2. #include <array>
  3. #include <string>
  4. #include <type_traits>
  5. #include <iomanip>
  6.  
  7. const int ARRAY_SIZE = 5;
  8.  
  9. template <typename C>
  10. class ValArray
  11. {
  12. public:
  13. 	template<typename T = C, typename std::enable_if<std::is_same<T, bool>::value, int>::type = 0>
  14.     ValArray() { _values.fill(false); }
  15.  
  16. 	template<typename T = C, typename std::enable_if<!std::is_same<T, bool>::value, int>::type = 0>
  17.     ValArray() { }
  18.  
  19.     ValArray(const ValArray&) = delete;
  20.  
  21.     C& operator[](size_t pos) { return _values[pos]; }
  22.  
  23.     // ...
  24. private:
  25.     std::array<C, ARRAY_SIZE> _values;
  26. };
  27.  
  28. int main()
  29. {
  30. 	std::cout << std::boolalpha;
  31.  
  32. 	ValArray<int> val1;
  33. 	for(int i = 0; i < ARRAY_SIZE; ++i) {
  34. 		std::cout << "val1[" << i << "] = " << val1[i] << std::endl; 
  35. 	}
  36. 	std::cout << std::endl;
  37.  
  38. 	ValArray<bool> val2;
  39. 	for(int i = 0; i < ARRAY_SIZE; ++i) {
  40. 		std::cout << "val2[" << i << "] = " << val2[i] << std::endl; 
  41. 	}
  42. 	std::cout << std::endl;
  43.  
  44. 	ValArray<std::string> val3;
  45. 	for(int i = 0; i < ARRAY_SIZE; ++i) {
  46. 		std::cout << "val3[" << i << "] = \"" << val3[i] << "\"" << std::endl; 
  47. 	}
  48. 	std::cout << std::endl;
  49.  
  50. 	return 0;
  51. }
Success #stdin #stdout 0.01s 5456KB
comments (?)
stdin 
Standard input is empty
stdout 
val1[0] = 0
val1[1] = 0
val1[2] = 267005368
val1[3] = 5261
val1[4] = 267005368

val2[0] = false
val2[1] = false
val2[2] = false
val2[3] = false
val2[4] = false

val3[0] = ""
val3[1] = ""
val3[2] = ""
val3[3] = ""
val3[4] = ""
https://ideone.com/ZyB81p
language:
C++ 4.3.2 (gcc-4.3.2)
created:
3 years ago
visibility:
public

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