#* http://rosettacode.org/wiki/Logical_operations
  Write a function that takes two logical (boolean) values, and outputs the
  result of "and" and "or" on both arguments as well as "not" on the
  first arguments.
*#

logic = { a, b |
  p "a and b: #{ a && b }"
  p "a or b: #{ a || b }"
  p "not a: #{ not a }"
}