From: "David A. Black" <dblack@...>
Date: 2010-07-23T02:34:12+09:00
Subject: Re: Enumerators and generators

Hi --

On Fri, 23 Jul 2010, Hal Fulton wrote:

> My next questions then are:
>
> 1. Does Enumerator::Generator have all the functionality of the
> old generator.rb, just (it seems to me) a different usage?

No; it doesn't have #next or #rewind, but enumerators
(which can easily/transparently wrap generators) do. Neither of them
appears to have #pos, unless it's available in some other way that I
haven't spotted. (I'm writing this in haste and without benefit of irb,
so I'm not digging further right now.)

> 2. In David's example, is "yielder" simply an array of objects? Do
> we know or care? (If so, I'd be tempted to call it "list" because
> "yielder" reminds of the keyword yield which I suppose is unrelated
> here.)

It's actually an Enumerator::Yielder object, which I think only exists
for the purpose of being the receptacle for the objects to be yielded by
the generator.


David

-- 
David A. Black, Senior Developer, Cyrus Innovation Inc.

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