Re: duration and pitch in a function

[Paolo Prete]

I searched in "extending" manual for 2.15, but I did not find a solution for my 
problem.

Shortly, given this fragment of code:

----------------------------------------


myFunction  = #(define-music-function (parser location foobar) (ly:duration?)
#{
   a ...how_can_I_use_$foobar_as_duration_??...
#})

\new Staff \myFunction ...how_can_I_pass_duration_??...


-----------------------------------------


...which is the right syntax and which version of lilypond could I use?


Thanks




--- Gio 8/12/11, David Kastrup <address@hidden> ha scritto:

> Da: David Kastrup <address@hidden>
> Oggetto: Re: duration and pitch in a function
> A: address@hidden
> Data: Giovedì 8 dicembre 2011, 07:59
> Paolo Prete <address@hidden>
> writes:
> 
> > I need to create a function that
> >
> > accepts some_pitch and some_duration as arguments and
> prints the
> > following three notes:
> >
> > 1) some_pitch with some_duration
> > 2) some_pitch with some_duration*2
> > 3) some_pitch with some_duration*3
> >
> >
> > Should I use ly:duration as type of the argument two?
> 
> ly:duration? would be the predicate.  And yes,
> definitely.
> 
> > I can't find documentation for that.
> >
> > I use LilyPond 2.12.3 but I can upgrade it if
> necessary...
> 
> If you upgrade, you will find both the functionality itself
> as well as
> the documentation.
> 
> I don't quite remember the version; it might be necessary
> to take one of
> the 2.15.x releases.
> 
> -- 
> David Kastrup
> 
> 
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