wrapping enum in namespace ?

[Maximilien]

I'm maintaining old code. I can't use enum class. Do you wrap your enums in namespace to kinda simulate enum class ? or is there a pattern Ì don't know about to make regular enum safer ? Thanks.

CI/CD = Continuous Impediment/Continuous Despair

[k5054]

You don't need to go as far as a namespace, just a struct will do.

struct Color {
enum value { Red, Yello, Blue };
};

int main()

{
Color::value box = Color::value::Red;
}

If you want to be able to print Color::Red as a string, it's a bit more involved

#include

struct Color {
enum hue { Red, Yellow, Blue } value;
std::string as_string() {
std::string color;
switch(value) {
case Red : color = "Red"; break;
case Yellow : color = "Yellow"; break;
case Blue : color = "Blue"; break;
};
return color;
}
Color(Color::hue val) : value(val) {};
bool operator==(const Color&other) {
return value == other.value;
}
friend std::ostream& operator<<(std::ostream& os, const Color& color);
};

std::ostream& operator<<(std::ostream& os, const Color& color)
{
os << color.value;
return os;
}

int main()
{
Color x = Color::Red;
Color y = Color::Blue;
std::cout << x << '\n';
std::cout << x.as_string() << '\n';
if(x == y)
return 1;
else
return 0;
}

"A little song, a little dance, a little seltzer down your pants" Chuckles the clown

[Maximilien]

ahhhh yes, I've seen that before. thanks. :thumbsup:

CI/CD = Continuous Impediment/Continuous Despair