I need help trying to get my anonymous function to compile in Scala.
See below:
private def mapBlock(helper: Helper): (Any) => Block = {
(original: Any) => {
val block = original.asInstanceOf[Block]
// logic with helper here
return block
}
}
However, when I compile this I get "Expression of type block does not conform to expected"
What am I doing wrong here?
The problem is that you're calling return block which is the returning to the mapBlock function the value block. But your mapBlock expectes a function typed (Any) => Block. To solve this just remove the return and have block.
private def mapBlock(helper: Helper): (Any) => Block = {
(original: Any) => {
val block = original.asInstanceOf[Block]
// logic with helper here
block
}
}
If you want to have a return then you could name your function and return that. Although in Scala we generally omit all returns, so this would not be idiomatic Scala:
private def mapBlock(helper: Helper): (Any) => Block = {
val function = (original: Any) => {
val block = original.asInstanceOf[Block]
// logic with helper here
block
}
return function
}
