Assignment 7: Playgrounds

After reading each section of the Swift Language Reference, provide a working code snippet (1 - 10 Lines) that demonstrates your knowledge using the Playgrounds technology: https://developer.apple.com/library/prerelease/content/documentation/Swift/Conceptual/Swift_Programming_Language/GuidedTour.html#//apple_ref/doc/uid/TP40014097-CH2-ID1

The topics that you are demonstrating include: 1) Hello World 2) Simple Values (variables) 3) Control Flows (if, then, else, for, next, while) 4) Functions and Closures (invoking and passing values) 5) Classes and Objects (creating a new class, values of an enumeration) 6) Protocol and Extensions (Classes, enumerations, and structs can all adopt protocols) 7) Handling Errors (Catch and Throw) 8) Generic (Write a name inside angle brackets to make a generic function or type.)

Note: The code must run in XCode Playgrounds and be error free unless otherwise stated.