From: Mathieu Bouchard <matju@...>
Date: 2001-05-06T03:40:55+09:00
Subject: [ruby-talk:14716] Re: Why's Ruby so slow in this case?

On Sun, 6 May 2001, David S. wrote:
> On Sun, May 06, 2001 at 01:11:24AM +0900, Stefan Matthias Aust wrote:
> >  10.58   474.77    109.53    18949     5.78   156.36  Range#each
> It seems to me that your code is spending most of its time in the
> range loops.  I'd try replacing the loops like

Yes, it does spend alot of time, but most of it is yielding; only about
10% (109.53) is REALLY spent there (according to this benchmark)

> with simpler "while" loops like

it's true that "for" and "while" are still faster than method calls with
blocks.

> I'm guessing Range allocates a new array of indices for each loop.

Oh, that reminds me of both Perl and Python, but not of Ruby. I was *very
very* pleased when I saw Ruby had Range objects (which do not allocate
any kind of Array)

matju