Il 18 gennaio 2019 01:21:31 CET, David Kastrup <address@hidden> ha scritto:
David Kastrup <address@hidden> writes:
Valentin Villenave <address@hidden> writes:
On 1/18/19, David Kastrup <address@hidden> wrote:
This is not really an issue for string-manipulation.
Agreed. Nevertheless, I was pleasantly surprised to see that
ly:parser-include-string could accept an incomplete _expression_.
(Previously, ly:parser-parse-string would have been much less flexible
here.)
Let's rather do this in a sane manner:
Indeed, a named "let" loop is clearly the preferred way to go!
That being said, I still wonder if there’d be any way of making it
work with either iota or make-list without having to go through string
manipulations. (It would remove the need for a loop with an
incremented counter.)
You can use something like
(fold (if (negative? num) drop rise)
music
(make-list (abs num) 1))
but I don't like creating lists for the sake of controlling loop size.
By the way: `drop' is a function imported from (slri slri-1) and it's
probably not a good idea to redefine it.