What is Func, how and when is it used

Question

What is Func<> and what is it used for?

Answer 1

Func is a predefined delegate type for a method that returns some value of the type T.

In other words, you can use this type to reference a method that returns some value of T. E.g.

public static string GetMessage() { return "Hello world"; }

may be referenced like this

Func f = GetMessage;