Re: utility: \interpolate

[Erik Sandberg]

On Saturday 25 February 2006 09.42, Nicolas Sceaux wrote:
> May I nitpick about style?

Thanks! some of the mistakes were genuine while others were oversights due to 
laziness (some of the code is just a quick hack/proof-of-concept; I hope to 
replace it with better code sometime. E.g., primitive-eval was used because I 
forgot the name of apply)

btw, do you know any good sources where I can learn about scheme coding style?

> Erik Sandberg <address@hidden> writes:
> > #(define (make-rel-music-function sig fun)
> >   (let ((newfun (lambda args
> > (make-music 'SequentialMusic
>
> the indentation is broken here.

My scheme code tends to generate very deep indentation, see below.

>
> The idomatic way of setting music properties is:
>   (set! (ly:music-property m 'elements) value)

thanks (so music-set-property is just a legacy thing?)

> >      (let
>
> Usually, you don't skip a line after let.

It was the only way I could stop Emacs from indenting it very deeply. Many of 
the newlines etc. were added for this reason; the indentation felt too deep. 
Do you know any nice general tricks, either to reduce indentation, or to make 
heavily indented code readable?

> in srfi-1, first is synonym to
> car. 
Ouch, I didn't know about that. Thanks.

> >    (if (and (<= pitch-diff 1) (>= pitch-diff -1))
>
>      (if (<= -1 pitch-diff 1)
>
> makes the relation clearer.

Ah, nice. It's funny that lisp's "unintuitive" prefix operators is what makes 
it the first language I've seen which naturally expresses <= in a nice, 
readable way.

-- 
Erik