From: gotoken@... (GOTO Kentaro)
Date: 2001-01-08T04:40:17+09:00
Subject: [ruby-talk:8781] Re: No :<, :>, etc. methods for Array

In message "[ruby-talk:8780] Re: No :<, :>, etc. methods for Array"
    on 01/01/08, "Brian F. Feldman" <green@FreeBSD.org> writes:
>class Array
>    def sum
>        total = self[0]	# defaults to nil
>	self[1..-1].each {|x| total += x}
>	total
>    end
>end
>
>It simplifies lots of things (especially mathematics) in Ruby to have it, 
>and I believe it's generally useful enough that it should probably be 
>standard.  What do you think?

See:
http://www.rubycentral.com/faq/rubyfaq-11.html#ss11.4

`Enumerable#inject' is introduced there.  That may be adopted if an
apter method name is proposed.

-- Gotoken