mitch =
    age:    21
    height: 180cm
    pets:   [\dog, \goldfish]

phile = {}
phile{height, pets} = mitch
phile.height #=> 180
phile.pets   #=> ['dog', 'goldfish']

a = [2 7 1 8]
    ..push 3
    ..shift!
    ..sort!
a #=> [1,3,7,8]