怎么才能输出内容，而不是内存地址

[a307697028]

class SongList
def initialize
@songs = Array.new
end
def deleteFirst
@songs.shift
end
def deletelast
@songs.pop
end
def append(aSong)
@songs.push(aSong)
self
end
def [](key)
if key.kind_of?(Integer)
@songs[key]
else
puts "123123"
end
end

end

class Song
def intiailze(name,artist,duration)
@name = name
@artist = artist
@duration = duration
end
end

list = SongList.new
list.append(Song.new("title1","artist1",1))
list.append(Song.new("title2","artist2",2))
list.append(Song.new("title3","artist3",3))

list.append(Song.new("title4","artist4",4))

[tonyzhangcn]

首先，你的问题没说明白。
其次，initialize 你拼写错了，所以 这种语句应该都是fail 的list.append(Song.new("title1","artist1",1))