On 18/04/15 16:21, Urs Liska wrote: > So the choice of these names is actually an inconsistency in LilyPond's > terminology? > > I'm asking this because I have just completed a tutorial about > define-music-function and its siblings, and I realized that I used the > terms function and procedure in an arbitrary mix. > > Now I think that I should follow the consistency of the Guile manual , > use "procedure" everywhere in my text and point out the inconsistency in > naming.
I notice you're talking about functions and procedures, where other people have been talking about functions and subroutines. As I understand it, they're all procedures - a procedure is an external section of code. A procedure may be a subroutine, that does not return a value but CAN have side effects (ie modify non-local memory). A function, on the other hand, does everything locally, has no side effects, and returns its result. What you call a procedure that has side effects AND returns a value is undefined ... :-) Cheers, Wol _______________________________________________ lilypond-user mailing list lilypond-user@gnu.org https://lists.gnu.org/mailman/listinfo/lilypond-user
