wip

Author: Neargye

include/type_safe/flag_set.hpp

@@ -559,6 +559,17 @@ class flag_set
         return flags_.to_int();
     }
 
+    template <typename UnaryFunction>
+    constexpr void for_each(UnaryFunction f) {
+        auto m = flags_.to_int();
+        using U = decltype(m);
+        for (U i = 0; i < std::numeric_limits<U>::digits; ++i) {
+            if ((m & (U{1} << i)) != U{0}) {
+                f(static_cast<Enum>(i));
+            }
+        }
+    }
+
     //=== bitwise operations ===//
     /// \returns A set with all the flags flipped.
     constexpr flag_set operator~() const noexcept