Madoka..you are right..i'm trying to learn Scheme by writing simple
functions..i have many ideas about what i would want to achieve..for
example..\mark \default is a cool feature because it is never in wrong
order..but when it is inside a bar i would want it to have a "," under
it..so now i'm trying to understand how lilypond works in combination with
scheme..and i did start to learn scheme so i could improve in lilypond..
and now i understand that \breathe looks like (make-music (quote
BreathingEvent)) and that \mark \default look
like (make-music 'MarkEvent 'label '()) and that '() is the default
value..but i'm still one step away of being abel to combine it in a
function..but i think that i am one step ahead that i was yesterday..
If i did get it right..to write a function i first write some standard
lilypond code how i would want it to look..use displayMusic to see how it
should look and than try to simulate it in scheme..
and i imagine where if statment could come in..
btw. i use web gmail and dwb..it was my failure copying madokas code into
vim..
On Mon, May 6, 2013 at 7:42 PM, David Kastrup <d...@gnu.org> wrote:
> Madoka Machitani <madok...@gmail.com> writes:
>
> > On Mon, May 6, 2013 at 10:59 PM, David Kastrup <d...@gnu.org> wrote:
> > [...]
> >
> > In general, your approach is fundamentally flawed: it is very bad
> > idea
> > to write code relying on user-specified music to be of a
> > particular type
> > (in this case, SequentialMusic) without verifying it. [...]
> >
> > I think he is just struggling to lern Scheme now by writing simple
> > functions,
> > and won't understand such technical terms you provided. Also, the one
> > who initially wrote flawed sample code (knowingly, to avoid
> > complexity) is me.
>
> But you did not avoid complexity. Even when not using #{ #}, how is
>
> insMark =
> #(define-music-function (parser location mark mus)
> (markup? ly:music?)
> (set! (ly:music-property mus 'elements)
> (cons (make-music 'MarkEvent 'label mark)
> (ly:music-property mus 'elements)))
> mus)
>
> supposed to be less complex than
>
> insMark =
> #(define-music-function (parser location mark mus)
> (markup? ly:music?)
> (make-sequential-music
> (list (make-music 'MarkEvent 'label mark) mus)))
>
> ? Actually, it might be worth mentioning that the above is _worse_ than
>
> insMark =
> #(define-music-function (parser location mark mus)
> (markup? ly:music?)
> #{ \mark #mark #mus #})
>
> because it works worse with point&click. You should at least do
>
> insMark =
> #(define-music-function (parser location mark mus)
> (markup? ly:music?)
> (make-sequential-music
> (list (make-music 'MarkEvent 'label mark 'origin location) mus)))
>
> to get the same usability as the #{...#} version.
>
> --
> David Kastrup
>
>
> _______________________________________________
> lilypond-user mailing list
> lilypond-user@gnu.org
> https://lists.gnu.org/mailman/listinfo/lilypond-user
>
--
*Nesmotren govori kao da mačem probada, a jezik je mudrih iscjeljenje.
Izreke 12:18*
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