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From: quale@picard.cs.wisc.edu (Douglas E. Quale)
Newsgroups: comp.lang.misc
Subject: Re: On whether C has first-class composable functions
Message-ID: <1991Feb11.160735.9458@spool.cs.wisc.edu>
Date: 11 Feb 91 16:07:35 GMT
References: <25199:Feb801:33:1191@kramden.acf.nyu.edu> <1991Feb8.191014.6430@spool.cs.wisc.edu> <6828:Feb906:14:3491@kramden.acf.nyu.edu>
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Organization: U of Wisconsin CS Dept
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In article <6828:Feb906:14:3491@kramden.acf.nyu.edu> brnstnd@kramden.acf.nyu.edu (Dan Bernstein) writes:
>I never said that those expressions were nonsensical. Your implication
>is a lie, plain and simple. I doubt you have the integrity to review the
>articles and apologize, but I'll give you one chance to do so before I
>start quoting things in public.
>

Quote away, Dan.  I'm not afraid of the truth.

>> Instead of continually saying it's trivial, post your compose code in C and
>> then we'll see how it stacks up.
>
>I did. Since you apparently would rather flame than think, here's the
>three-way composition that you claim to be so difficult. I've written it
>out step-by-step and put in comments just for you.
>
>  compose(square,square,sqsq) /* put square o square in sqsq */
>  compose(square,sqsq,sqsqsq) /* put square o sqsq in sqsqsq */
>  printf("%d\n",apply(sqsqsq,2)); /* apply sqsqsq to 2 and print it */
>
>Exercise: write the missing struct fun definitions and initializations.
>
>---Dan

Dan, this is your job, not mine.  I say it can't be done.

int square(int x) { return (x*x) }

is easy enough, but I can't get the rest to work.

How about helping me out?

-- Doug Quale