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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: Missing in Booch: range operations
Date: 09 Nov 2002 13:56:56 +0000
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mheaney@on2.com (Matthew Heaney) writes:

> The problem is that iterators only know about elements -- they don't
> know anything about containers.  Neither Charles nor the STL attempts
> to detect this error.

Matt, you say this as though it were a law of nature! There is nothing
in the notion of iterator that prevents them knowing about the
container. Indeed (being pedantic) the very name iterator indicates
that there is a container involved (otherwise, what would you be
iterating over?)

dictionary.com says:

   iterator

   <programming> An object or routine for accessing items from a list,
   array or stream one at a time.

   By extension, the term can be used for an object or routine for
   accesing items from any data structure that can be viewed as a
   list. For example, a traverser is an iterator for tree-shaped data
   structures.