[plt-scheme] Dead lock using map-stream?

First of all, what good would that thing do?
map-stream calls proc for each element of the stream, or in other words, calls (+ 0), (+ 1), etc. and streams them.
Second, does (enumerate-interval 0 10) work?
 

	-----Original Message----- 
	From: Gurpreet S. Saini [mailto:gsaini at u.washington.edu] 
	Sent: א 23/11/2003 05:08 
	To: plt-scheme at list.cs.brown.edu 
	Cc: 
	Subject: [plt-scheme] Dead lock using map-stream?
	
	

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	[Note that both of definitions come from chapter 3 of
	the first edition of SICP]
	
	Consider
	
	1. the following defintions:
	
	(define the-empty-stream '())
	
	(define (enumerate-interval low high)
	        (if (> low high)
	            the-empty-stream
	            (cons-stream low
	                        (enumerate-interval (+ low 1) high))))
	
	(define (map-stream proc stream)
	    (if (empty-stream? stream)
	         the-empty-stream
	         (cons-stream (proc (head stream))
	                      (map-stream proc (tail stream)))))
	
	2. And the following call:
	
	(map-stream + (enumerate-interval 0 10))
	
	Right now this call is stalled. It looks to me like
	this is supposed to happen. This is because both enumerate-interval and
	map-stream's call to tail is in a cons-stream.
	
	
	thanks
	--Gurp
	
	
	
	
	
	
	
	
	
	

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