What does () => mean in C#?

Question

I\'ve been reading through the source code for Moq and I came across the following unit test:

Assert.Throws(() => Times         


        

Answer 1

()=> is a nullary lambda expression. it represents an anonymous function that's passed to assert.Throws, and is called somewhere inside of that function.

void DoThisTwice(Action a) { 
    a();
    a();
}
Action printHello = () => Console.Write("Hello ");
DoThisTwice(printHello);

// prints "Hello Hello "