Sha256: ae308443726a96a87f9cdc454799ee1c6ad2e1954c59eae989e07b9249312faf
Contents?: true
Size: 1.5 KB
Versions: 21
Compression:
Stored size: 1.5 KB
Contents
# frozen_string_literal: true
if Lite::Ruby.configuration.monkey_patches.include?('integer')
class Integer
ROMAN_NUMERALS ||= {
M: 1000, CM: 900, D: 500, CD: 400, C: 100, XC: 90, L: 50, XL: 40, X: 10, IX: 9, V: 5, IV: 4,
I: 1
}.freeze
def bit(bit)
if bit.negative?
mask = (1 << ~bit)
self & ~mask
else
mask = (1 << bit)
self | mask
end
end
def bit?(bit)
mask = (1 << bit)
(self & mask) != 0
end
def bit_clear(bit)
mask = (1 << bit)
self & ~mask
end
def bitmask(mask)
if mask.negative?
self & mask
else
self | mask
end
end
def bitmask?(mask)
(self & mask) != 0
end
def combinatorial(num)
(0...num).inject(1) { |acc, i| (acc * (self - i)) / (i + 1) }
end
def factorial
(1..self).inject { |acc, i| acc * i } || 0
end
def factors
limit = Math.sqrt(self).floor
(1..limit).each_with_object([]) do |i, array|
next unless (self % i).zero?
sq = (self / i)
array.push(i)
array.push(sq) if sq != i
end
end
def of(&block)
Array.new(self, &block)
end
def roman_numeral
return '' if zero?
return "-#{(-self).roman_numeral}" if negative?
ROMAN_NUMERALS.each { |key, val| break "#{key}#{(self - val).roman_numeral}" if val <= self }
end
def to_time
Time.at(self)
end
alias to_t to_time unless defined?(to_t)
end
end
Version data entries
21 entries across 21 versions & 1 rubygems