Re: function variable question

[Alexander Kobel]

Hugh Myers wrote:
> Given:
>
> flashNote = #(define-music-function (parser location note)(ly:music?) #{
>   $note s2. \pageBreak
>   #}
> )
>
> I'd like to modify it so that a fixed duration for the note can be
> within the function rather than in the calling sequence. [...]
> I've tried various versions of $note4, {$note}4 etc--- all producing
> errors of course. Clues? Suggestions?

Inside the music function, note is essentially an arbitrary music 
expression, so you can't just attach the length, as you recognized. 
Basically, you'd have to parse the whole music expression, and replace 
the chord durations by a quarter.
Luckily, there's already a function called \makeRhythm in 
http://lsr.dsi.unimi.it/LSR/Item?id=390 , doing exactly this.  With this 
included,

flashNote = #(define-music-function (parser location note)(ly:music?) #{
  \makeRhythm $note "4" s2. \pageBreak
  #}
)

should do what you want.


Cheers,
Alexander