From: Mike Stok <mike@...>
Date: 2006-03-23T20:44:18+09:00
Subject: Re: Require Math


On 23-Mar-06, at 6:38 AM, Lindsay Boyd wrote:

> I need to access the sqrt method in my rails app. I believe I need the
> Math library for this:
>
> irb(main):010:0> require "Math"
> LoadError: no such file to load -- Math
>
> Could someone tell me where I download the Math library from, and  
> where
> I should place it on my file system? I can't seem to find any
> documentation explaining this.

It is already there, you can call it in a couple of ways:

puts Math.sqrt(2)

or if you want a lot of Math methods you can use include to get the  
Math module's methods without the Math prefix:

include Math
puts sqrt(2)

You should read up on what include does before using it.

Hope this helps,

Mike

-- 

Mike Stok <mike@stok.ca>
http://www.stok.ca/~mike/

The "`Stok' disclaimers" apply.