Thursday, 21 July 2016

Interfaces vs Abstracts

Abstract classes and Interfaces plays a major role in making our solution design. I had some time to analyse the best fit for business scenarios and differences.
Interfaces vs Abstracts:
  • Abstract classes specify the commonality in frame and function between multiple classes
  • Interfaces provide a frame for multiple class.
  • Abstract class contains member definition, Interface can only hold declaration.
  • Methods in a interface should be always defined in the derived class, but its not mandatory in abstract class.
  • Abstract classes can be used with classes which share same functionality
  • Interfaces can be used with classes that share different functionalities but similar blueprint.
  • Interfaces are used for dependency inversions and loose coupling
There is an interesting article from Microsoft regarding the same. Please refer

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