2_object_oriented_programming

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Summary

Object-oriented programming

Node Tree

• OOP
  • encapsulation
    • encapsulation_desc
  • inheritance
    • inheritance_desc
    • polymorphism
      • override
    • proto_chain_less_inheritance_more_delegation
      • delegation
    • superclass
      • subclass
  • model_system_as_collection_of_objs
  • public_interface_private_state
  • classes_instances
    • instance
      • created_with_constructor
    • class

Nodes

OOP
content	Object-oriented programming
children	encapsulation, inheritance, model_system_as_collection_of_objs, public_interface_private_state, classes_instances

classes_instances
content	Classes and Instances
children	instance, class
parents	OOP

inheritance
content	Inheritance
children	inheritance_desc (description), polymorphism, proto_chain_less_inheritance_more_delegation, superclass
parents	OOP

model_system_as_collection_of_objs
content	Model system as collection of objects, each one representing an aspect of the system
parents	OOP

encapsulation
content	Encapsulation
children	encapsulation_desc
parents	OOP

class
content	class: abstraction definition representing a type of object in the system.
parents	classes_instances

instance
content	Instance: concrete object of a particular type
children	created_with_constructor
parents	classes_instances

created_with_constructor
content	Created with constructor
parents	instance

public_interface_private_state
content	public interface to other code, private internal state
parents	OOP

inheritance_desc
content	inheritance: mechanism that allows objects of different types to share properties from a common source.
parents	inheritance

superclass
content	superclass / parent class: class a particular class is derived from
children	subclass (related)
parents	inheritance

subclass
content	subclass / child class: class derived from superclass
parents	superclass

polymorphism
content	polymorphism: method with same name, but different implementation in different classes
children	override
parents	inheritance

override
content	override: method in a subclass that replaces the superclass's implementation
parents	polymorphism

encapsulation_desc
content	encapsulation: keeping an object state private and making a clear division between public interface and private state.
parents	encapsulation

proto_chain_less_inheritance_more_delegation
content	A prototype is less like inheritance, more like delegation
children	delegation
parents	inheritance

delegation
content	delegation: pattern where an object, when asked to perform a task, can perform the task itself or ask another object (delegate) to perform task on its behalf
parents	proto_chain_less_inheritance_more_delegation