Sha256: 6c09bc2fd42736faec83299f56f08baadbe5c26698525367c57159fed056686e
Contents?: true
Size: 872 Bytes
Versions: 16
Compression:
Stored size: 872 Bytes
Contents
#!/usr/bin/env ruby
# -*- encoding: utf-8 -*-
# Copyright Steffie Dorn <mail@muflax.com>, 2017
# License: GNU APGLv3 (or later) <http://www.gnu.org/copyleft/gpl.html>
class Numeric
def round_into num
((self / num) / num + 1) * num
end
def round_to num
(self / num.to_f).round * num
end
def multiple_of?(number)
number != 0 ? self % number == 0 : zero?
end
DELIMITER_REGEX = /(\d)(?=(\d\d\d)+(?!\d))/
def delimit delimiter="_"
left, right = self.to_s.split(".")
left.gsub!(DELIMITER_REGEX) do |digit_to_delimit|
"#{digit_to_delimit}#{delimiter}"
end
[left, right].compact.join(".")
end
def prime?
return false if self < 2
not (2..(Math.sqrt(self))).any?{|f| self.multiple_of? f}
end
def factorial
Math.factorial self
end
def factors
(1..self).select{|f| self.multiple_of? f}
end
end
Version data entries
16 entries across 16 versions & 1 rubygems