Arrays
Create Array of Strings
Create Array with Array new
Create Array of Symbols
Manipulating Array Elements
Accessing elements
Creating an Array with the literal constructor
Decomposition
Arrays union intersection and difference
Two-dimensional array
Inject reduce
Filtering arrays
Arrays and the splat operator
map
Turn multi-dimensional array into a one-dimensional flattened array
Get unique array elements
Get all combinations permutations of an array
Remove all nil elements from an array with compact
Create an Array of consecutive numbers or letters
Create Array of numbers