Re: Catch direction operators

[Urs Liska]

Am 01.10.2013 12:04, schrieb David Kastrup:
> Urs Liska <address@hidden> writes:
>
> > Am 29.09.2013 17:04, schrieb David Kastrup:
> > > \new Voice \with { \mapList #colorizeDir Slur.StringNumber.TextScript }
> > \new Voice \with { \mapList #colorizeDir #(map (lambda (x) (car x))
> > all-grob-descriptions) }
> >
> > Adds the option of coloring all grobs with a 'direction property.
> I cringe whenever I see something like (lambda (x) (car x)).  You are
> aware that this is just an obfuscated version of car itself?
No. But I'm ready to learn.
What I want to achieve here (with the map) is a list of all cars of 
all-grob-descriptions.

#(map (lambda (x) (car x)) all-grob-descriptions)

gives me what I want. So what would I have to do to make it cleaner/less 
obfuscated?

Urs