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Create Array of Symbols

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array = %i(one two three four)

Creates the array [:one, :two, :three, :four].

Instead of %i(...), you may use %i{...} or %i[...] or %i!...!

Additionally, if you want to use interpolation, you can do this with %I. 

a = 'hello'
b = 'goodbye'
array_one = %I(#{a} #{b} world)
array_two = %i(#{a} #{b} world)

Creates the arrays: array_one = [:hello, :goodbye, :world] and array_two = [:"\#{a}", :"\#{b}", :world]

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Arrays:
* 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
* Cast to Array from any object
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