From: Hongli Lai <redmine@...>
Date: 2009-07-31T08:56:46+09:00
Subject: [ruby-core:24629] [Bug #1844] Immediates Should Not Respond to :dup

Issue #1844 has been updated by Hongli Lai.


I disagree.

- Exceptions are expensive.
- Rescuing a specific exception requires a multi-line statement, while respond_to? allows one to write "bar.foo if bar.respond_to?(:foo)"
- How do you know the exception was raised by the method itself and not by a method called by the method?

You say respond_to? is not always reliable. I think it should be reliable.
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http://redmine.ruby-lang.org/issues/show/1844

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