From: "Wolfgang Nádasi-Donner" <ed.odanow@...>
Date: 2007-11-15T09:47:24+09:00
Subject: Re: Proposal: Array#walker

There is one big difference between the actual proposals and my original 
"walker" usage.

I wanted to have a Method of class Array, which "walks" through an Array object 
like "each" without using any index at all, and presents the left and the right 
context of the actual element of the "each like" processing inside the block.

The variant of this method, that creates an Enumerator object when used without 
a block, can be used in map/filter/reduce chains.

A variant of an method like this which uses indices, is different from my 
original approach.

Wolfgang N��dasi-Donner