#Hashes are
associative arrays
#Each data
element is paired with a key
#Arrays use
small ints for indexing
#Hashes use
a hash function on a string
kids_ages =
{"Robert" => 16, "Cristina" =>14, "Sarah"
=> 12, "Grace" =>8}
puts
kids_ages
Output
======
Sarah12Cristina14Grace8Robert16