小编Jor*_*gen的帖子

为什么我的工厂方法下面没有类型参数？

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

@RunWith(classOf[JUnitRunner])
class WhyScalaNeverWillMakeIt extends FunSuite {

  test("Array becomes ArraySeq when you least want it") {
    val arr = Array("A", "B", "C")
    def f: String => Dummy = new Dummy(_)

    val bucket = new Bucket[Dummy](arr.map(f))
//    val bucket2 = Bucket[String, Dummy](arr, f)
//    val bucket3 = Bucket[Dummy](arr, f)
    val bucket4 = Bucket(arr, f)
  }

  class Bucket[T]( val arr: Array[T] )  {/* Loads of business logic */}

  object Bucket {
//    def apply[T, U](arr: Array[T], …