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  1. #include <cstdint>
  2. using namespace std;
  3.  
  4. class cmw_user_input_data_member_flags {
  5. public:
  6.     enum E : int16_t {
  7.         default_ = 0x0,
  8.         headers = 0x1,
  9.         middlefile = 0x2,
  10.         choices = 0x4
  11.     };
  12.     constexpr cmw_user_input_data_member_flags() noexcept {};
  13.     constexpr explicit cmw_user_input_data_member_flags(E v) noexcept : val{v} {};
  14.  
  15.     cmw_user_input_data_member_flags(const cmw_user_input_data_member_flags& o)
  16.                                     noexcept : val{o.val} {};
  17.  
  18.     cmw_user_input_data_member_flags& operator=(E v) noexcept 
  19.         {val = v; return *this;};
  20.  
  21.     cmw_user_input_data_member_flags& 
  22.         operator=(cmw_user_input_data_member_flags& o) noexcept 
  23.         {val = o.val; return *this;};
  24.  
  25.     operator E() const noexcept {return val;};
  26. protected:
  27.     E val{default_};
  28. private:
  29.     //operator int() const; // eventually
  30. };
  31.  
  32. int main() {
  33.     using Flags = cmw_user_input_data_member_flags;
  34.     Flags x{Flags::headers};
  35.     //Flags y{0x1}; // not valid
  36.     Flags z;
  37.     z = Flags::choices;
  38. }
  39.  
Success #stdin #stdout 0s 2848KB
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https://ideone.com/eV9DCH
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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