Today I found some thing interesting.. i.e Swift vs Objective-C  1. Playgrounds 2. No mandatory interface declaration 3. Simplified declaration syntax 4. Optional Types 5. Type inference 6. Improved memory management 7. Improved “switch” operator 8. Improved enums 9. Support of functional programming approaches and features 10. Support of Generics Click me!. I will take you details information given by redwerk