From: Joel VanderWerf <vjoel@...>
Date: 2004-08-14T06:03:25+09:00
Subject: Re: Question: A method for summing several variables

Joel VanderWerf wrote:
>   p table.select {|i,j,value| value > 16}
>     # ==> [[8, 9, 17.0], [9, 8, 17.0], [9, 9, 18.0]]

and an even more relevant use of Enumerable:

   p table.inject(0) {|sum, (i,j,value)| sum + value}
     # ==> 900.0