Newlisp - Reasoned Schemer - kanren-book

[Tim Johnson]

I just got the "Reasoned Schemer".

The code that supports the lessons in the book are at:
http://sourceforge.net/project/showfile ... p_id=99654

I'd welcome comments on how difficult it might be to port
the kanren code to newlisp.

On a scale of 1 to 10? :-)
thanks
Tim

[cormullion]

I suspect that it wouldn't be too hard, if you understood Scheme. I can guess at one:

Code: Select all

(define nl (string #\newline))

could be

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(define (nl) (string "\n"))

Luckily there are some schemers on this forum.

[Tim Johnson]

Sounds promising. I've barely fooled around with scheme, but
I do have a couple of books here on the language specs.
thnx
tim

[Lutz]

The newLISP equivalent would be:

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(define nl "\n")

This is not defining a procedure but only a variable. Also newLISP does not have a character data type, but uses strings of length one for characters. Therefore we do not need to use 'string' to transform \#newline.

So in the end above statement is valid in newLISP and Scheme.