class MeterCat::Calculator
Public Instance Methods
calculate(meters, range, names = nil)
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# File lib/meter_cat/calculator.rb, line 17 def calculate(meters, range, names = nil) (names || keys).each do |name| calculation = fetch(name, nil) next unless calculation meters[name] = {} range.each do |date| meters[name][date] = fetch(name).calculate(meters, date) end end end
dependencies(names)
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Add any missing names required for calculations that are named
# File lib/meter_cat/calculator.rb, line 31 def dependencies(names) names.each do |name| calculation = fetch(name, nil) next unless calculation calculation.dependencies.each do |dependency| names << dependency unless names.include?(dependency) end end end
percentage(name, numerator, denominator)
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# File lib/meter_cat/calculator.rb, line 9 def percentage(name, numerator, denominator) store(name, Divide.new(numerator, denominator, Divide::FORMAT_PERCENTAGE)) end
ratio(name, numerator, denominator)
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# File lib/meter_cat/calculator.rb, line 5 def ratio(name, numerator, denominator) store(name, Divide.new(numerator, denominator, Divide::FORMAT_RATIO)) end
sum(name, values)
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# File lib/meter_cat/calculator.rb, line 13 def sum(name, values) store(name, Sum.new(values)) end