# Define an array
beatles = ["john", "ringo", "seb"]
#             0       1       2

# Read an element
beatles[1]

# Modify an element
beatles[2] = "george"

# Create an element
beatles << "paul"
beatles.push("paul")

# Delete
beatles.delete("paul")
beatles.delete_at(1)

# Create:   << / push
# Read:     [index]
# Update:   [index] =
# Delete:   delete/ delete_at

beatles.each do |beatle|
  puts "#{beatle.capitalize} is a Beatle!"
end

beatles << 3
joined_beatles = beatles.join(":") # returns a string
joined_beatles.split(":") # returns an array

beatles.length # /count/size