convert string to binary number


class String

  def bin
    val = self.strip
    pattern = /^([+-]?)(0b)?([01]+)(.*)$/
    parts = pattern.match(val)
    return 0 if not parts
    sign = parts[1]
    num  = parts[3]
    eval(sign+"0b"+num)
  end

end

a = "10011001".bin
b = "0b10011001".bin
c = "0B1001001".bin
d = "nothing".bin
e = "0b100121001".bin

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convert string to binary number : String class Extension « String « Ruby

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