I posted a similar question a short time ago. But I
don't think the replies help me understand the
behaviors. So I post a short version( sorry if it
bothers you again).
I have the following script. I don't call Song#to_s in
my script but I can print all the attributes of a
song. Why is that?
Thanks,
Li
···
#########
class Song
def initialize(name,artist,duration)
@name=name
@artist=artist
@duration=duration
end #attr_reader :name, :artist, :duration
def to_s
"#@name\t#@artist\t\t#@duration"
end
end
s=Song.new('song1','author1','20')
puts s
######output
ruby ruby20c.rb
song1 author1 20
Exit code: 0
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