From: Yugui <yugui@...>
Date: 2009-08-26T13:01:24+09:00
Subject: [ruby-dev:39163] [BUG:1.9] ||= &&= doesn't return rval, but result of method

Redmineプロジェクト宛に来てしまったissueを転送します。

---------- 転送メッセージ ----------
From: Joshua Hull <redmine@ruby-lang.org>
日付: 2009/08/26 11:01
件名: [redmine4ruby-lang:256] [Bug #1996] ||= &&= doesn't return rval,
but result of method
To: redmine4ruby-lang@qwik.jp


Bug #1996: ||= &&= doesn't return rval, but result of method
http://redmine.ruby-lang.org/issues/show/1996

起票者: Joshua Hull
ステータス: Open, 優先度: Normal

Inconsistent behvaiour introduced in Ruby 1.9.1 with compound
assignment operators.

>> o = Object.new
=> #<Object:0x00000100975a80>
>> def o.foo=(x); x * 2 end
=> nil
>> def o.foo; nil end
=> nil
>> o.foo = 1
=> 1
>> o.foo ||= 1
=> 2
>> RUBY_VERSION
=> "1.9.2"
>> RUBY_RELEASE_DATE
=> "2009-07-24"
>> RUBY_REVISION
=> 24260

In ruby 1.8

>> o = Object.new
=> #<Object:0xe6c8>
>> def o.foo=(x); x * 2 end
=> nil
>> def o.foo; nil end
=> nil
>> o.foo = 1
=> 1
>> o.foo ||= 1
=> 1
>> RUBY_VERSION
=> "1.8.7"


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