From: Yusuke Endoh <redmine@...>
Date: 2010-01-31T18:12:57+09:00
Subject: [ruby-core:27981] [Bug #2495](Rejected) Matrix: Vector#each2 should check its argument

Issue #2495 has been updated by Yusuke Endoh.

Status changed from Open to Rejected

According to [ruby-dev:40237] and [ruby-dev:40267], it is the fate of
duck typing and compatibility.


[ruby-dev:40237] by Keiju (the author of lib/matrix.rb):

- Integer#[] and #size have wrong names from the aspect of duck typing.
- Type checking to restrict only Vector and Array will prevent NVector
  of NArray.

[ruby-dev:40267] by matz:

- Integer#[] and #size are older than the concept of duck typing, and
  it is too late to change their names.
- From the aspect of duck typing, type checking should not be done and
  we should accept such an error of [ruby-core:27901].

-- 
Yusuke ENDOH <mame@tsg.ne.jp>
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