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Programming

- - - - Each step output leads to next
      - No feedback from user, good for small projects
    - - Prototypes made with users
      - Non-linear process
      - Feedback on each prototype
    - - Short development cycles
      - Changing user requirements
      - Feedback on prototype at end of each cycle
    - - Use of focus group to get requirement
      - Prototyping with user feedback
      - Prototypes created within time limit, heuristic
    - - repetitive stages towards prototype
      - Prototypes improved from feedback, until project is complete
- - - - Class
        
        Template of state and behaviours for object, has methods and attributes
      - Derived class
        
        Attributes and ops from superclass, can have own
      - Inheritance
        
        Derived class that inherits all attributes and ops from superclass
      - Encapsulation
        
        Hides data, can only be accessed in class
      - Advantages
        
        Parts can be tested in dependently, encapsulation
        
        How an object works isn't required
        
        Can easily make new objects, and can be reused in different programs
        
        Easier to maintain; modular structure
      - Polymorphism
        
        Objects process differently depending on class