From: Ron Jeffries <ronjeffries@...>
Date: 2002-03-08T00:38:49+09:00
Subject: Re: file reading impossibly slow?

On Thu, 07 Mar 2002 13:34:38 GMT, Peter Hickman <peter@semantico.com> wrote:

>Your file reading is a bit non-ruby, so to speak, you need to get the 
>hang of itterators.

Doubtless I do. But this is really going to be a binary file, read with read().
I just put the newlines in to make it easy. So this solution won't stick for the
long run.

Nobu tells me I should go to 1.7. Not sure if I'm up to that challenge, but it
sounds pretty fast from his numbers. Unless he was running on a Cray or
something.
>
>t1 = Time.now
>count = 1
>File.open("data.txt") {|file|
>    file.each_line{|line| count += 1}
>}
>puts Time.now - t1
>puts count
>
>Using the each_line iterator from the file class removes the need for a 
>eof test. This should run quite a bit faster.

Actually, if anything, it is slower. Very interesting ...

Ronald E Jeffries
http://www.XProgramming.com
http://www.objectmentor.com
I'm giving the best advice I have. You get to decide whether it's true for you.