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18.11: Glossary

Last updated

Apr 2, 2022
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- 18.10: Data encapsulation
- 18.12: Exercises

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encode:: To represent one set of values using another set of values by constructing a mapping between them.
class attribute:: An attribute associated with a class object. Class attributes are defined inside a class definition but outside any method.
instance attribute:: An attribute associated with an instance of a class.
veneer:: A method or function that provides a different interface to another function without doing much computation.
inheritance:: The ability to define a new class that is a modified version of a previously defined class.
parent class:: The class from which a child class inherits.
child class:: A new class created by inheriting from an existing class; also called a “subclass”.
IS-A relationship:: A relationship between a child class and its parent class.
HAS-A relationship:: A relationship between two classes where instances of one class contain references to instances of the other.
dependency:: A relationship between two classes where instances of one class use instances of the other class, but do not store them as attributes.
class diagram:: A diagram that shows the classes in a program and the relationships between them.
multiplicity:: A notation in a class diagram that shows, for a HAS-A relationship, how many references there are to instances of another class.
data encapsulation:: A program development plan that involves a prototype using global variables and a final version that makes the global variables into instance attributes.

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