The Well-Grounded Rubyist, Third Edition

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magic comment map method, 2^nd, 3^rd  block evaluation with  building on top of each  in-place mapping with map!  return values of mapping, in place with map! match method, 2^nd  common uses  difference between match and match?  substring captures  with lookaheads  with MatchData, 2^nd  with modifiers match? method, 2^nd MatchData class, 2^nd matches  conditional  constraining with quantifiers  success and failure matching, with regular expressions Math module max methods merge method, 2^nd message method message receivers  classes as    class methods vs. instance methods    class objects calling methods    creating class objects    singleton method    writing class methods  self as default messages  origin of objects in classes  sending to objects ...