From: Yukihiro Matsumoto <matz@...>
Date: 2004-09-20T12:19:44+09:00
Subject: Re: Array#index block and rdetect

Hi,

In message "Re: Array#index block and rdetect"
    on Mon, 20 Sep 2004 11:12:12 +0900, "David A. Black" <dblack@wobblini.net> writes:

|>   * Enumerable#each_index should be removed (yes/no)
|
|There is no Enumerable#each_index -- nothing to remove.  

I meant each_with_index.

|>   * How about other enumerable classes?
|
|I think the idea of every enumerable class having an "index", defined
|as part of that class, is possibly useful.  For hashes it could be the
|keys; for arrays, the integer index; for files, the line number.  In
|some cases (like index/key for hashes), it might be redundant.  But it
|might open up some good possibilities.  

The most consistent (but incompatible) change would be:

  * leave Enumerable#each_with_index unchanged.
  * make Hash#each as alias of Hash#each_value
  * redefine Hash#each_with_index as alias of Hash#each_pair

But this change may break many programs.
							matz.