C＃：Func <>用作方法的返回值是什么意思？

Question

What does the following method return ? An array of function returning HashSet ?

    internal override Func<HashSet<char>>[] GetCompactableCharSets()
    {
        return new Func<HashSet<char>>[0];
    }

Answer 1

What does the following method return ?

By signature , this is a method that returns an array of functions with no arguments returning HashSet<char> .

The concrete implementation returns an empty array described above.

Answer 2

是的，返回一个返回HashSet的函数的空数组。