java.lang.UnsupportedOperationException: empty.reduceLeft

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via GitHub by l15k4
, 2 years ago
via Apache's JIRA Issue Tracker by Yin Huai, 1 year ago
empty.reduceLeft
via Stack Overflow by gladed
, 1 year ago
java.lang.UnsupportedOperationException: empty.reduceLeft
at scala.collection.TraversableOnce$class.reduceLeft(TraversableOnce.scala:180)
at scala.collection.mutable.ArrayBuffer.scala$collection$IndexedSeqOptimized$$super$reduceLeft(ArrayBuffer.scala:48)
at scala.collection.IndexedSeqOptimized$class.reduceLeft(IndexedSeqOptimized.scala:74)
at scala.collection.mutable.ArrayBuffer.reduceLeft(ArrayBuffer.scala:48)
at scala.collection.TraversableOnce$class.reduce(TraversableOnce.scala:208)
at upickle.Macros$Reading.mergeTrait(Macros.scala:77)
at derive.Derive.deriveTrait(Derive.scala:298)
at derive.Derive$$anonfun$9.apply(Derive.scala:237)
at derive.Derive$$anonfun$9.apply(Derive.scala:235)
at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
at scala.collection.immutable.Map$Map2.foreach(Map.scala:137)
at scala.collection.TraversableLike$class.map(TraversableLike.scala:234)
at scala.collection.AbstractTraversable.map(Traversable.scala:104)
at derive.Derive.deriveType(Derive.scala:235)
at derive.Derive.derive(Derive.scala:60)
at upickle.Macros$.macroRImpl(Macros.scala:145)

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