Yes, this is the logical way of doing it without preprocessor. At the end of the day, this is pretty equivalent. Not sure if this is a net gain or not. Condit

Yes, this is the logical way of doing it without preprocessor. At the end of the day, this is pretty equivalent. Not sure if this is a net gain or not. Conditional compilation is needed, moving the feature from the preprocessor stage to a lazy evaluator is probably costlier for the compiler and it might also be costlier for the IDE to highlight active/inactive parts of the code. From the user point of view, this is very close, mostly a cosmetic change.