From: Yukihiro Matsumoto <matz@...>
Date: 2007-12-25T12:38:15+09:00
Subject: Re: Enumerable#to_a can run forever

Hi,

In message "Re: Enumerable#to_a can run forever"
    on Tue, 25 Dec 2007 11:27:29 +0900, Benjamin Kudria <ben@kudria.net> writes:

|Aaah, ok.  Those would be excellent.  I look forward to 1.9!  Thank you!
|However, what about Prime.new.to_a ?  That would still run forever, and 
|the unsuspecting coder might be caught by surprise.

It's no way to avoid entering infinite loop when you do some
operations on infinite enumerable, such as Prime.  For example, trying
#sort or #max on Prime, or even putting it as a splat will cause
infinite loop.  Adding an argument or a block to #to_a does not
improve the situation a lot, I think.

							matz.