From: Christer Nilsson <janchrister.nilsson@...>
Date: 2005-12-14T01:22:56+09:00
Subject: Re: Array.invert

Hash.invert exists, returning another Hash.

Is there any other interesting interpretation of Array.invert ?

(Matrix.invert is another thing :-)

Is Array.invert useful enough to be a part of the original set of 
methods of Array?

I see two reasons for building in methods,
  the first one is to make programmer code faster,
  the second is to make code execute faster.

If Array.invert is seldom used and possible to execute fast, already in 
Ruby, there is no good reason to build it in.

Personally, I used Array.invert in finding solutions for kakuro.

Christer

-- 
Posted via http://www.ruby-forum.com/.