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

    SQL_SMALLINT = 32_767
    SQL_INTEGER = 2_147_483_647
    SQL_BIGINT = 9_223_372_036_854_775_807

    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

14 entries across 14 versions & 1 rubygems

Version	Path
lite-ruby-1.3.3	lib/lite/ruby/integer.rb
lite-ruby-1.3.2	lib/lite/ruby/integer.rb
lite-ruby-1.3.1	lib/lite/ruby/integer.rb
lite-ruby-1.3.0	lib/lite/ruby/integer.rb
lite-ruby-1.2.0	lib/lite/ruby/integer.rb
lite-ruby-1.1.15	lib/lite/ruby/integer.rb
lite-ruby-1.1.14	lib/lite/ruby/integer.rb
lite-ruby-1.1.13	lib/lite/ruby/integer.rb
lite-ruby-1.1.12	lib/lite/ruby/integer.rb
lite-ruby-1.1.11	lib/lite/ruby/integer.rb
lite-ruby-1.1.10	lib/lite/ruby/integer.rb
lite-ruby-1.1.9	lib/lite/ruby/integer.rb
lite-ruby-1.1.8	lib/lite/ruby/integer.rb
lite-ruby-1.1.7	lib/lite/ruby/integer.rb