$plus$plus$eq(ArrayBuffer.scala:49) at scala.collection.TraversableOnce.to$(TraversableOnce.scala:313)
at org.apache.spark.InterruptibleIterator.to(InterruptibleI
Haskell中的下列bind(>>=)代码没有编译:<interactive>:38:11: Expected type: [t] -> [[t]] In the second argument of ‘(>>=)’, namely ‘Just’
In the expression: [[1]] &
$plus$plus$eq(ArrayBuffer.scala:49) at scala.collection.TraversableOnce.toBuffer(TraversableOnce.scala(InterruptibleIterator.scala:28)
at scala.collection.<em