From: Isak Johnsson <isak@...>
Date: 2002-11-22T22:11:46+09:00
Subject: Re: Ruby is too slow

Hello Bulat!

> IJ> I've read that using the Array's at function is faster than
> IJ> operator [] because it doesn't support ranges.
> 
> in this situation it's like giving a banana to man who don't eat for
> 30 days :)

I guess you're right, but I couldn't help trying: Changing the inner 
loop like this saved 10% of the execution time:

   image[i] = lookup.at(image.at(i))

I guess there are situations where that would matter even if it is not 
remotely sufficient in this case...

Writing "image.at(i) = ..." gives me a parse error. Why?

Isak