全局/本地命名冲突的解决方法

Workarounds for a global / local naming conflicts

假设我有这两个 classes:

class A {
  def foo(i: String) = println(s"${i}")
  def foo(i: String, j: Int) = println(s"${i} ${j}")
}

class B {
  def foo(i: Int) = println(s"${i}")
  def foo(i: Int, j: String) = println(s"${i} ${j}")
}

我有一个与全局变量和方法同名的变量 class:

val inst = A()

abstract class AppB extends App { 
  def inst = B()
}

我扩展上面的内容:

object MyApp extends AppB {
  // Should reference A
  inst.foo("s11")
  inst.foo("s22", 11)
  
  // Should reference B
  inst.foo(33)
  inst.foo(44, "s33")
}

假设我不想重命名,有没有办法:

来自https://dotty.epfl.ch/docs/reference/dropped-features/package-objects.html

If a source file src.scala contains such top-level definitions, they will be put in a synthetic object named src$package

也许在这种情况下使用“自动生成的”object 名称访问 val inst 可行?