OOP #20

We learned about array sorting using IComparable and IComparer. we implemented the Generics form of the interfaces IComparable IComparer. we also performed casting using (type)obj.

More topics covered:

• • default value of an object inside a class is null
  • as + null check is better than is + casting
  • IComparer class could be in the same class file
  • reverse sort order

Links:

• • • ISuperhero exercise code solution (HW)
    • Class code: is, is , casting using (type)object
    • Class code: IComparable, IComparer
    • Lesson Summary Video
    • Homework!
    • IComparable – MSDN link
    • IComparer – MSDN link
    • Array sorting algorithm – MSDN link
    • Array sorting algorithm – Stackoverflow