Re: [stack] impure concatenativity: let without translation

On Mar 19, 2008, at 11:58 AM, Joe Bowbeer wrote:

> 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?

Postfix, as are *all* procedures. Only special forms are infix.  
Perhaps this is a better declaration form:

     (define (a b c quad)
        ...)

- John