gistfile1.txt

SOLID =>
  Single Responsibility Principle (SRP) => object should only have single responsiblity
  Open/Closed Principle (OCP) => should be open for extension , but closed for modification
  Liskov Substitution Principle (LSP) => design by contract
  Interface Segregation Principle (ISP) => many client interfaces are better than one general purpose interface
  Dependency Injection Principle (DIP) => one should 'depend upon abstractions, not depend upon concretions'

http://en.wikipedia.org/wiki/Solid_%28Object_Oriented_Design%29

Code smell - http://en.wikipedia.org/wiki/Code_smell

Types of code smell

God object => anti-pattern where an object knows too much, does too much (e.g., large class)
http://en.wikipedia.org/wiki/God_object

Feature envy => a class that uses methods of another class excessively

Inappropriate intimacy => a class that has dependencies on implementation details of another class

Refused bequest => a class that overrides  a method of a base class in such a way that the contract of the base class is not honored by derived class. see Liskov substitution principle

Lazy class => a class that does too little

Duplicated method => a method, function, or procedure that is very similar to another

Contrived Complexity => forced usage of overly complicated design patterns where simpler design would suffice