From: The Higgs bozo <higgs.bozo@...>
Date: 2009-03-28T00:23:17+09:00
Subject: Re: Bug: Ruby 1.9.1 File io on Windows is slooooow

Alex Fenton wrote:
> 
> There are sometimes ways round this (eg I rewrote diff/lcs to use string
> character enumerators rather than repeated expensive calls to 
> String#[]).
> 
> I expect the Ruby team are already aware of the problem, and I hope this
> is a top priority for 1.9.2.

Unfortunately it appears to be a designed-in pessimization, though I 
initially thought it was a mistake when I saw it.  Guido van Rossum (the 
Python creator) probably did too, as he asked Matz about it at the 
40-minute mark here

http://www.youtube.com/watch?v=oEkJvvGEtB4

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