--- self * times

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    ͤϥԡʤȤդƤtrap::Array

    :

        p [1, 2, 3] * 3  #=> [1, 2, 3, 1, 2, 3, 1, 2, 3]

    times ʸʤ顢self.join(times) Ʊ
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        p [1,2,3] * ","
        # => "1,2,3"

