To use the node in your project you should have the cesars/data-latch library installed. Use the “File → Add Library” menu item in XOD IDE if you don’t have it yet. See Using libraries for more info.
C++ implementation
struct State {
};
{{ GENERATED_CODE }}
void evaluate(Context ctx) {
if (isInputDirty<input_LT>(ctx))
emitValue<output_Bo>(ctx, getValue<input_Bi>(ctx));
}