From: Todd Benson <caduceass@...>
Date: 2007-11-08T13:11:33+09:00
Subject: Re: how to delete array

On Nov 7, 2007 10:05 PM, Todd Benson <caduceass@gmail.com> wrote:
> On Nov 7, 2007 9:47 PM, ara.t.howard <ara.t.howard@gmail.com> wrote:

> > cfp:~ > cat a.rb
> > array = 1, 2, 3, 4, 7, 4
> >
> > index = 1, 3
> > i = -1
> > array.delete_if{ index.delete(i+=1) }
>
> This is excellent!  Only, what if your underlying implementation does
> not traverse an array in order with #delete_if ?  As it turns out, it
> does, but would it have to?  I see #delete_if as a conditional that
> has nothing to do with the Array's ordering, so I was a little
> surprised at this assumption.
>
> Todd
>

Nevermind that.  I can see how you might want to consider position in
a condition (maybe state machine stuff or whatever).  #delete_if is
after all an Array method, which is the only set of objects that
require a linear order.  Sorry for noise now.

Todd