1. adding a record to the head so that it is not duplicated using scala spark

    adding a record to the head so that it is not duplicated using scala spark

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  2. Why do some Scala methods use polymorphic arguments instead of using AnyNothing

    Why do some Scala methods use polymorphic arguments instead of using AnyNothing

  3. How to pattern match using regular expression in Scala

    How to pattern match using regular expression in Scala

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