Re: [stack] impure concatenativity: let without translation

On Wed, Mar 19, 2008 at 1:58 AM, John Nowak wrote:

> Just moments ago, I gave this example of the quadratic formula:
>
>   (define (quad a b c)
>     (let ((d b 4 a c * * -)
>           (r d 0 >= [d sqrt] ["quad: sqrt of negative" error] if)
>           (x 2 a *)
>           (p b r - x /)
>           (n b r + x /))
>       p n))
>
>

Is quad invoked postfix or prefix?

The (quad a b c) syntax for declaration in scheme is especially nice because
it looks like the expression that's used to invoke the function.

I'm confused by the mixture of prefix and postfix in your example.
Actually, I'm confused by all postfix, but I'd prefer to have consistency
with my confusion:)

--Joe


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