From: Tanaka Akira <akr@...>
Date: 2011-08-04T05:22:49+09:00
Subject: [ruby-core:38767] Re: [Ruby 1.9 - Bug #5138][Open] Add nonblocking IO that does not use exceptions for EOF and EWOULDBLOCK

2011/8/4 Aaron Patterson <aaron@tenderlovemaking.com>:

> If the exceptions are not exceptional, that makes me wonder why are they
> exceptions at all?  Since these aren't really exceptional cases, I would
> prefer not to rescue.

They are errors defined by OS.
It is usual to map OS errors to exceptions Errno::*.
-- 
Tanaka Akira