Scala Map filterKeys() method with example
The filterKeys() method is utilized to find all the pairs where the keys satisfies the given predicate.
Method Definition: def filterKeys(p: (A) => Boolean): Map[A, B]
Return Type: It returns all the “key-value” pairs of the map where, the keys satisfies the given predicate.
Map(5 -> geeks, 4 -> for)
Here, only two key-value pairs are returned as their keys are greater than two as per the stated predicate.
Here, no pair is returned as none of the keys satisfies the stated predicate.