array.rb

# You can create an array of one string element with *
my_array = *"hello"
=> ["hello"]

arr = %w(a b c)
=> ["a", "b", "c"]

head, *tail = arr
=> ["a", "b", "c"]

head
=> "a"

tail
=> ["b", "c"]

first, *, last = arr
=> ["a", "b", "c"]

first
=> "a"

last
=> "c"