From: Tim Hammerquist <tim@...>
Date: 2002-08-29T10:31:51+09:00
Subject: Re: Converting Perl scripts to Ruby?

Dan Sugalski graced us by uttering:
> At 6:23 PM +0900 8/28/02, Tim Hammerquist wrote:
>>     foreach (1..10) { do_something }
[ snip ]
>>The biggest waste in the above code is that it creates a
>>temporary anonymous list of 10 actual integers over which to
>>iterate, all of which are tossed away, their value never
>>actually processed.
> 
> That turns out not to be the case. Constant ranges or lone
> arrays in a foreach generate an iterator, so there's no
> temporary list. There's code to make the 'fake' values in the
> constant range iterator real if you reference them in ways that
> would require them persist outside the foreach block.

Yet Another Perl Optimization...  Cool. Thanks.  :)

Tim Hammerquist
-- 
As a computer, I find your faith in technology amusing.