"带有接口的抽象类的类型化方法"

Question

Consider this trivial example:

abstract class Foo {

  public abstract functionAdd(number1, number2, number3): number

  public abstract functionMultiply(number1, number2, number3): number
}

interface Numbers {
  number1: number
  number2: number
  number3: number
}

Answer 1

Please keep in mind that Numbers<\/code> contains unordered set of keys, just like HashMap whereas both functionAdd<\/code> and functionMultiply<\/code> expects an ordered tuple of arguments. In other words, These methods expect:

functionAdd(...[number1, number2, number3]:[number, number, number])