Methods and functions

Alice has both methods and functions.

The distinction between them is:

• A method sends a message to an object asking it to perform some action.  Importantly, a method does not return a value.
• A function in Alice is also sends a message to an object, typically asking the object to send back some information.  (The function may also ask the object to perform some action.)  Most importantly, a function in Alice always returns a value.

This lesson will deal primarily with functions and the values that they return.