From: William James <w_a_x_man@...>
Date: 2009-02-16T11:53:16+09:00
Subject: Re: Iterating a changing Hash under 1.9.1

Phrogz wrote:

> Always relegating deletions to a delete_if or reject or
> explicit calls while iterating a duplicate may be inefficient in some
> cases where complex logic needs to happen and ideally happen in a
> single pass through the data.

h={:b,22, :c,33, :d,44, :e,55}
    ==>{:b=>22, :c=>33, :e=>55, :d=>44}
h.merge( {:b,202, :e,505, :f,66} )
    ==>{:b=>202, :c=>33, :f=>66, :e=>505, :d=>44}