A C++23 library that provides (opt-in) bit-wise operations for arbitrary enum classes
Note
See versions < 3.0 for C++20 support!
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Using CPM
CPMFindPackage( NAME flagpp VERSION 3.0 GIT_REPOSITORY "https://github.com/Curve/flagpp" )
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Using FetchContent
include(FetchContent) FetchContent_Declare(flagpp GIT_REPOSITORY "https://github.com/Curve/flagpp" GIT_TAG v3.0) FetchContent_MakeAvailable(flagpp) target_link_libraries(<target> flagpp)
#include <flagpp/flags.hpp>
enum class my_enum
{
none,
a = 1 << 0,
b = 1 << 1,
c = 1 << 2,
};
template <>
constexpr bool flagpp::enabled<my_enum> = true;
// You can now use `my_enum` for bit-wise operations!
auto flag = my_enum::a;
flag |= my_enum::b;
flag |= my_enum::c;
if (flag & my_enum::b)
{
flag &= ~my_enum::b;
}For more examples see tests