Binary digits

# title: Binary digits
# source: https://rosettacode.org/wiki/Binary_digits
# category: Rosetta Code
# difficulty: Intro
# summary: Convert fixed non-negative integers into binary strings.
# tags: popular, numbers, strings, conversion
# vibe: 0.2

def binary_digits(value)
  if value == 0
    return "0"
  end

  digits = ""
  current = value

  while current > 0
    digits = "" + (current % 2) + digits
    current = current / 2
  end

  digits
end

def run
  [
    { value: 0, binary: binary_digits(0) },
    { value: 5, binary: binary_digits(5) },
    { value: 42, binary: binary_digits(42) },
    { value: 255, binary: binary_digits(255) }
  ]
end