Github user ueshin commented on a diff in the pull request:
https://github.com/apache/spark/pull/21986#discussion_r207702606
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/higherOrderFunctions.scala
---
@@ -123,7 +125,10 @@ trait HigherOrderFunction extends Expression {
}
}
-trait ArrayBasedHigherOrderFunction extends HigherOrderFunction with
ExpectsInputTypes {
+/**
+ * Trait for functions having as input one argument and one function.
+ */
+trait UnaryHigherOrderFunction extends HigherOrderFunction with
ExpectsInputTypes {
--- End diff --
I like this trait but I'm not sure whether we can say
`"Unary"HigherOrderFunction` for this.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
