var a = 1:1                 # Complex(1, 1)
var b = 3.14159:1.25        # Complex(3.14159, 1.25)

[   a + b,                  # addition
    a * b,                  # multiplication
    -a,                     # negation
    a.inv,                  # multiplicative inverse
    a.conj,                 # complex conjugate
    a.abs,                  # abs
    a.sqrt,                 # sqrt
    b.re,                   # real
    b.im,                   # imaginary
].each { |c| say c }