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Outcome 4 - Object-Oriented Programming

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README.md

Day 1: Outcome 4 - Object-Oriented Programming

Real World Problem modeled using OOP principles. The model is based on the various formulae of calculation land rates in a sample municipality.

The formulae for calculating land-rate are:

+===========================================================+
||  Type Of Building      |         Land Rate              ||
|===========================================================|
| Commercial              | KES 30 per floor+space unit     |
+-----------------------------------------------------------+
| Residential             | KES 10  per housing unit        |
+-----------------------------------------------------------+
| Utility                 | 0(Municipal owned are rate free)|
+-----------------------------------------------------------+
| Uncategorized           | KES 500(Flat Rate)              |
+-------------------------+---------------------------------+
                                    created on asciiflow.com

The tests folder contains the tests used in the development of the classes using TDD format ##Applied Basic OOP principles

Inheritance

  • The classes CommercialBuilding, ResidentialBuilding and UtilityBuilding are subclasses of the BaseBuilding class.

abstraction

  • Each class of buildings has a different formula for calculating the land rate to pay to the municipal as per the table above. The exact implementation is hidden behind the get_land_rate function of the subclass.

polymorphism

  • The classes CommercialBuilding, ResidentialBuilding and UtilityBuilding inherit the attributes and behaviour of the super class BaseBuilding . However, each individual class define some unique attributes and behaviors to that particular building class i.e: : - CommercialBuilding has floorspace : - ResidentialBuilding has living units : - UtilityBuilding defines the utility it provides

encapsulation

  • Some of the attributes in the BaseBuilding class and its sub-classes are private to that particular instance. These attributes are therefore manipulated using getter and setter functions. i.e set_location and get_location functions are used to manipulate the value of self.__location attribute in an instance of the classes.

events

  • This allows for the communication between the instances of classes. This was, however, not implemented in this model