Ruby's to_s method question (from Axe book 2nd edition)

Posted by prosseek on Stack Overflow See other posts from Stack Overflow or by prosseek
Published on 2010-04-12T20:13:55Z Indexed on 2010/04/12 20:23 UTC
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ruby

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print

According to the axe book (2nd edition), we can use to_s as follows.

class Song
  def to_s
    "Song"
  end
end

song = Song.new()
song.to_s

But, it doesn't give me anything, in order to print something to the stdout, I should run

  def to_s
    p "Song"  
  end

Is there any change since the ruby 1.8.2 when the book was written for? My ruby version info is 1.8.7 for Mac.

ruby 1.8.7 (2009-06-08 patchlevel 173) [universal-darwin10.0]

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