2mo ago

safe enum

for anyone who doesn't know, this "-Werror=switch-enum" compiler option make the compiler throw an error if all of the enum values aren't explicitly handled in a "switch" statement

cpp

    

enum class colors {
        blue,
        red,
        purple,
}

void func(colors c)
{
        switch(c)
        {
                case colors::blue:
                        // do something
                        break;
                case colors::red:
                        // do something
                        break;
                default:
                        // do something
                        break;
        }
}


int main()
{
        func(colors::blue);
}

this code doesn't compile on clang and gcc with the option "-Werror=switch-enum" because the "colors::purple" isn't explicitly handled. be aware that it doesn't throw a compiler error for "if" statements if one of the values isn't handled

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