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POO concepts

dandev Inglés 8 fichas

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1Types of Design PatternsBehavioral
Creational and
Structural
2EncapsulationProtecting variables, functions from outside of class in order to keep data integrity
3Class and ObjectA class is the blueprint from which individual objects are created.
An object is an instance of a class
4InheritanceAllows classes to inherit commonly used state and behavior from other classes
5PolymorphismBiologically speaking its an organism or species can have many different forms or stages
Programmitacally is how subclasses of a class can define their own unique behaviors and yet share some of the same functionality of the parent class
6What is the difference between Association, Aggregation and Composition?Association - I have a relationship with an object. Foo uses Bar
Composition - I own an object and I am responsible for its lifetime, when Foo dies, so does Bar
Aggregation - I have an object which I've borrowed from someone else. When Foo dies, Bar may live on.
7Define S.O.L.I.DSingle responsibility
Open-closed
Liskov substitution
Interface segregation
and Dependency inversion
8Dependency InjectionMeans giving an object its instance variables
(such as constructor injection or setter injection)