UBitFlagSet::IsValid

Use this function to verify if a UBitFlagSetSingle received from UBitFlagSet::First or UBitFlagSetSingle::Next is a valid bitflag set.

true if the bitflag set is a valid set, or false if not.

When you iterate through the UBitFlagSetSingle inside a UBitFlagSet object, you have to check the received UBitFlagSetSingle pointers to see if they are valid with UBitFlagSet::IsValid. The UBitFlagSetSingle pointers received can be invalid when you reach the end of the bitflagset.