From: Adam Van Den Hoven <mail@...>
Date: 2005-09-28T05:32:24+09:00
Subject: Re: Class and Iterator Design Question

Let me suggest yet another possibility, borrowing from Hash:

obj.each  { | element, container | ... }

You could even combine that with 1?

I like Mine and #1 .

On 27-Sep-05, at 12:24 PM, Jim Freeze wrote:

> On 9/27/05, Jim Freeze <jim@freeze.org> wrote:
>
> Concerning multiple containers for an object:
>
>> Here are four methods that I can see as potential solutions:
>>
>>   1. obj.each(:container) { |element| ... }
>>   2. obj.each_container { |element| ... }
>>   3. obj.container.each { |element| ... }
>>   4. obj.container; obj.each { |element| ... }
>>
>> No. (4) simply sets an internal state variable to indicate which  
>> container
>> #each uses. Not pretty, and not thread safe, but permits  
>> Enumerable to
>> be used.
>>
>
> I am curious what people think about these methods.
> To all you pattern experts, is there a pattern for this
> situation?
>
> --
> Jim Freeze
>
>