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In pattern matching, can I use the matched pattern as is?


If I understand your question correctly, you want to use the heading itself on ???'s place, this can be done using the @ pattern:

case first :: rest => first match {
      case head @ Heading(_,_) =>
buildPairsAcc(rest, acc, head)
      case Paragraph(_) // ... other cases

Note that this can be used on everything that'll pattern match, including lists:

case lst @ head::tail => // do stuff
with lst head and tail

Categories : Scala

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