class Allocate

Attributes

amount[RW]
ratios[RW]

Public Class Methods

evenly(amount, number_of_slices) click to toggle source
# File lib/guerrilla_patch/allocate.rb, line 26
def self.evenly(amount, number_of_slices)
  Allocate.new.tap do |a|
    a.amount = amount
    a.ratios = (1..number_of_slices).map { 1.to_d/number_of_slices }
  end.divided
end
new(amount = 0 , ratios = []) click to toggle source
# File lib/guerrilla_patch/allocate.rb, line 5
def initialize(amount = 0 , ratios = [])
  @amount = amount
  @ratios = ratios
end

Public Instance Methods

compensate_last_slice(rates) click to toggle source
# File lib/guerrilla_patch/allocate.rb, line 16
def compensate_last_slice(rates)
  rates.tap do |rates|
    max_rate = rates.max.abs
    rates[-1] = (rates[-1] + (amount - rates.sum_me)).round(2)
    if  rates[-1].abs > (2 * max_rate.abs )
      raise "Number is too small to be allocated on that number of slices(#@amount on #{@ratios.size} slices)."
    end
  end
end
divided() click to toggle source
# File lib/guerrilla_patch/allocate.rb, line 10
def divided
  divided_ratios = @ratios.map { |ratio| ratio.to_d/ratios.sum_me.to_d }
  rates = divided_ratios.map { |ratio| ((@amount * ratio).round(2)) }
  compensate_last_slice(rates)
end