Reverse Flip Flop

All too often I see people copypasting entire blocks of BP just because they need to change some parameters and there’s nothing to Select.

Introducing the Merge node, which is as useful as it is simple to implement:

Merge node in BP

BP macro

Merge macro in BP

BP macro with built-in Select

Merge macro in BP with integrated Select

C++ (sans wildcards)

UENUM()
enum class EMyAB : uint8
{
    A,
    B,
};

UCLASS()
class MY_API UMyLibrary : public UBlueprintFunctionLibrary
{
    GENERATED_BODY()

public:
    UFUNCTION(BlueprintCallable, Meta = (ExpandEnumAsExecs = "Exec"))
    static UPARAM(DisplayName = "A") bool Merge(EMyAB Exec)
    {
        return Exec == EMyAB::A;
    }
};