An S4 exercise for Knock-Knock Joke lovers.
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kkjokes: List with Knock-Knock Jokes
KnockKnock: Knock-Knock Jokes
KnockKnockJokes-package: Knock-Knock Jokes
Questions? Problems? Suggestions? Tweet to @rdrrHQian@mutexlabs.com.
Please suggest features or report bugs with the GitHub issue tracker.
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