From: Zengqh Mansion <zengqh.mansion@...>
Date: 2011-02-20T19:51:22+09:00
Subject: About the "def method=(param)",why compiled error?

very simple program:

class Song
  def initialize(duration)
    @duration = duration
  end

  def duration=(new_duration)
    @duration = new_duration
  end
end

song = Song.new(260)
print song.duration


the compiler outputs：
D:/我的文档/Ruby/attr_writer.rb:12:in `<main>': undefined method `duration'
for
#<Song:0xb33f10 @duration=260> (NoMethodError)。

appreciate for your help.

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