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Difference letrec & environment binding
From: |
Hans Aberg |
Subject: |
Difference letrec & environment binding |
Date: |
Wed, 13 Apr 2011 12:38:07 +0200 |
What is the practical difference between the two ways of doing the same thing
(letrec or an environment). Is letrec more efficient in the implementation of
Guile?
Hans
(letrec (
(even? (lambda (n)
(if (zero? n) #t (odd? (- n 1)))))
(odd? (lambda (n)
(if (zero? n) #f (even? (- n 1))))))
(even? 1000))
((lambda ()
(define even? (lambda (n)
(if (zero? n) #t (odd? (- n 1)))))
(define odd? (lambda (n)
(if (zero? n) #f (even? (- n 1)))))
(even? 1000)))
- Difference letrec & environment binding,
Hans Aberg <=