Scala Array map returns ArraySeq

Question

Why can\'t I have type parameters in my factory methods below?

import org.junit.runner.RunWith
import org.scalatest.junit.JUnitRunner
import org.scalatest.Fu         


        

Answer 1

Just add ClassManifest context bound:

    def apply[T, U: ClassManifest](arr: Array[T], f: T => U): Bucket[U] = new Bucket[U](arr.map(b => f(b)))
    def apply[T: ClassManifest](arr: Array[String], f: String => T): Bucket[T] = new Bucket[T](arr.map(b => f(b)))

For details check this and this