Niols <ni...@niols.fr> writes: > Hello, > > I am trying to dive a bit into the way LilyPond works, and I was > wondering about iterators. The documentation contains a page named > “iterator tutorial” [1] but this is only a placeholder for a future > tutorial. (I very much understand that it is painful to write such > tutorials and I am not here to complain of anything!) > > [1] > https://lilypond.org/doc/v2.20/Documentation/contributor/iterator-tutorial > > The only thing the page actually says is “Iterators are routines > written in C++ that process music expressions and sent the music > events to the appropriate engravers and/or performers.” > > Must I understand that it is not possible to write iterators in Scheme > and that they have to be written in C++?
Yes. > Must I then understand that, if I wanted to write iterators for a > personal use, I would have to recompile LilyPond myself? Yes, or reuse one of the existing ones. Some are comparatively generic. > If it is actually possible to write an iterator in Scheme, would > anyone have an example to show me or a link to give me? > > Thank you so much in advance. What do you want to achieve? -- David Kastrup
