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                        <h1 id="define-binary-enums"><a class="header" href="binary_enums.html#define-binary-enums">define binary enums</a></h1>
<p>enums re called true constants or named values...but one of the use cases is using binary operations ... so or, and, xor needs to be supported... using strong enums make the problem more difficult but better...</p>
<pre><code class="language-c++">
namespace ns {
enum struct Flags {
    A = 0B000001,
    B = 0B000010,
    C = 0B000100,
    D = 0B001000,
    E = 0B010000,
    F = 0B100000
};
}
ns::Flags operator|(ns::Flags x, ns::Flags y) {
    return (ns::Flags)((uint32_t)x | (uint32_t)y);
}
int main() {
    using ns::Flags;
    [[maybe_unused]] auto ab_mask = Flags::A | Flags::B;
    [[maybe_unused]] auto bc_mask = Flags::B | Flags::C;
    [[maybe_unused]] auto cd_mask = Flags::C | Flags::D;
    [[maybe_unused]] auto de_mask = Flags::D | Flags::E;
    [[maybe_unused]] auto ef_mask = Flags::E | Flags::F;
    [[maybe_unused]] auto all_mask = 0B111111;
    std::println("{}", typeid(ab_mask).name());
    std::println("{}", typeid(std::underlying_type_t&lt;ns::Flags&gt;).name());
    std::println("{}", ab_mask == Flags::A);
    std::println("{}", ab_mask == Flags::B);
    std::println("{}", ab_mask == (Flags::A | Flags::B));

    return 0;
}
</code></pre>

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