Introduction to OOP Chapter 1: Thinking Object-Oriented : next previous audio real text

Different Receivers, Same Message, Different Actions


var
	Fred : Florist;
	Elizabeth : Friend;
	Ken : Dentist;

begin
	Fred.sendFlowersTo(myFriend);  { will work }
	Elizabeth.sendFlowersTo(myFriend); { will also work }
	Ken.sendFlowersTo(myFriend); { will probably not work }
end;
The same message will result in different actions, depending upon who it is given to.
Intro OOP, Chapter 1, Slide 21