Can a mutator method modify a variable/object and return it?

Question

Is it okay to write a mutator method that modifies a variable/object and returns a value? For example, a function implementing a sorting algorithm that returns a sorted array?

Would this be considered a mutator method?

Answer 1

尽管这不是编写变体的常见方法，但是只要您明确指出要返回更新后的值，就不会有任何问题。