What is Func, how and when is it used

Question

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

Answer 1

Maybe it is not too late to add some info.

Sum:

The Func is a custom delegate defined in System namespace that allows you to point to a method with the same signature (as delegates do), using 0 to 16 input parameters and that must return something.

Nomenclature & how2use:

Func funcDelegate = someMethod;

Definition:

public delegate TResult Func(T arg);

Where it is used:

It is used in lambda expressions and anonymous methods.