[racket] Constructors for sequences

2012/4/29 Galler <lzgaller at optonline.net>:

>> (distribute sin list 1 2 3)
> (0.8414709848078965 0.9092974268256817 0.1411200080598672)

This makes the constructor explicit. That's what I want to avoid.

The problem is that a user can define his own type of sequence,
and I'd like my function work with user defined sequences too.

-- 
Jens Axel Søgaard