{ 'a' 1 'b' 2 'c' 3.14 'd' 'xyz' } as a_hash
a_hash print

hash (4 items)
 a => 1
 b => 2
 c => 3.14
 d => "xyz"

a_hash 'c' get         # get key 'c'
6.28 a_hash 'c' set    # set key 'c'
a_hash.'c'             # get key 'c' shorthand
6.28 a_hash:'c'        # set key 'c' shorthand