Florist Example from Chapter 1

Here is an example from the intuitive problem I discussed in Chapter 1. You will recall that I could send flowers to my friend in another city by giving a message to my local florist.

I could also achieve a similar effect by giving the same message to my wife, and instance of class Spouse. Thus, we have two different categories of values, not related in any way by inheritance, that both understand the same message.

[audio] [real] Text to accompany slide8, in Chapter 14 of An Introduction to Object-Oriented Programming