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Re: Pattern-generating Scheme function challenge


From: David Kastrup
Subject: Re: Pattern-generating Scheme function challenge
Date: Sun, 21 Jul 2013 07:49:35 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (gnu/linux)

Thomas Morley <address@hidden> writes:

> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
> %% definitions, helpers and functions
> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
>
> %% c/p from lily-library.scm
> %% Why not public?
> #(define (list-minus a b)
>   "Return list of elements in A that are not in B."
>   (lset-difference eq? a b))

Not public because it is trivial and not discoverable.  People looking
through GUILE documentation will find and use lset-difference.  There is
a lot of cruft in lily-library like that which should really be thrown
out.  Making it public would be a step in the wrong direction since then
people may start depending on it.

-- 
David Kastrup




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