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AliceCh4

Learning to Program with ALICE Chapter 4 key terms

QuestionAnswer
abstraction a technique used to reduce complexity in programming where similar tasks are combined into a single method. We then think about the overall task as opposed to all of the small actions to make up that task.
argument the actual value that is passed to a method through a parameter.
calling a method using a defined behaviour that an object contains when a program is executed.
class defines a particular kind of object. It is a template or a blueprint for all objects of that kind.
object-level method a new method created in an object that gives the object new behaviours. This new method extends the original class into something better than before.
inheritance a consequence of creating and saving object-level methods as a new class. Classes that have been extended get all of the original methods as well as all of the new methods that were created.
instance a word that describes the product when a single object has been created from a class
instantiating the act of creating a single object
method defines one or more of the behaviours to be exhibited by an object. Methods are a coordinated sequence of instructions that will be carried out by the object when the method is ‘called’.
object is one specific instance of a particular class.
parameter used to pass information to a method. It acts as a placeholder for the data and is then substituted into the small actions that make up that method.
primitive method a method that is defined as part of the original class definition.
user-defined method a method that we define at either the world level or the object level. This type of method is built from primitive methods.
stepwise refinement a design or storyboard technique that breaks the overall task into smaller tasks, making the job of solving a big problem more manageable.
world-level method a method created at the ‘world’ level, allowing all objects in the world the ability to share this method in a common fashion.
invoking a method another common term used instead of 'calling a method'. Executes the methods that have been included in the program.
Created by: marsenault