Can I build iterative process using recursive call in and
statement?
For example, purpose, we have function foo
that doesn't do anything. What kind of process it will create (iterative or recursion)?
(define (foo? bar)
(if (< bar 0) true (and (> 10 1) (foo? (- bar 1)))))
是的, and
是OK -你可以在阅读本标准 。
For Lamberts sake, lets expand the syntax.
(define (foo? bar)
(if (< bar 0)
#t ; tail position, but no call
(if (> 10 1)
(foo? (- bar 1)) ; tail position
#f))) ; tail position, but no call
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