From: Charles Oliver Nutter <charles.nutter@...>
Date: 2008-09-22T00:40:33+09:00
Subject: Re: for or each?

Phlip wrote:
> 'for' is arguably more readable. And it's not a performance issue - I 
> suspect the opcodes will be the same. It is very much a technical issue.

For is generally faster because it doesn't instantiate a new scope for 
each loop. It shares the same scope as its containing block of code, 
where each creates a new scope each time the block is called. I'm 
reasonably sure this applies to all Ruby versions too.

- Charlie