9 Objects
Object-oriented programming has become a mainstream, or even the mainstream, way of approaching programming. The idea is a simple one: instead of defining our functions in one part of the code, and the data on which those functions operate in a separate part of the code, we define them together.
Or, to put it in terms of language, in traditional, procedural programming, we write a list of nouns (data) and a separate list of verbs (functions), leaving it up to the programmer to figure out which goes with which. In object-oriented programming, the verbs (functions) are defined along with the nouns (data), helping us to know what goes with what.
In the world of object-oriented programming, each noun is an object. We say that each object ...
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