java.util.NoSuchElementException: head of empty list

coderanch.com | 2 months ago
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    beginner is unable to find cause of an error (Scala forum at Coderanch)

    coderanch.com | 2 months ago
    java.util.NoSuchElementException: head of empty list
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    beginner is unable to find cause of an error (Scala forum at Coderanch)

    coderanch.com | 1 hour ago
    java.util.NoSuchElementException: head of empty list
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    java.util.NoSuchElementException: head of empty list
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Root Cause Analysis

  1. java.util.NoSuchElementException

    head of empty list

    at scala.collection.immutable.Nil$.head()
  2. Scala
    Nil$.head
    1. scala.collection.immutable.Nil$.head(List.scala:337)
    2. scala.collection.immutable.Nil$.head(List.scala:334)
    2 frames
  3. week1
    session$$anonfun$main$1.apply$mcV$sp
    1. week1.session$$anonfun$main$1.process$1(week1.session.scala:60)
    2. week1.session$$anonfun$main$1.balance$1(week1.session.scala:63)
    3. week1.session$$anonfun$main$1.apply$mcV$sp(week1.session.scala:68)
    3 frames