Module: CovidPT::Utils

Extended by:
Utils
Included in:
Utils
Defined in:
lib/covid_pt/utils.rb

Instance Method Summary collapse

Instance Method Details

#cumulative_diff(a, b, start) ⇒ Object 



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# File 'lib/covid_pt/utils.rb', line 15

def cumulative_diff(a, b, start)
  a.inject(start) do |acc, (key, value)|
    b_value = b[key] || 0
    a_value = value || 0

    acc[key] ||= {values: [a_value], differences: []}

    new_entries = {values: [b_value], differences: [b_value - a_value]}

    acc[key].merge(new_entries) { |_, old, new| old.concat(new) }
    acc
  end
end

#diff(a, b) ⇒ Object 



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# File 'lib/covid_pt/utils.rb', line 5

def diff(a, b)
  a.inject({}) do |acc, (k, v)|
    b_value = b[k] || 0
    a_value = v || 0

    acc[k] = { value: v, difference: a_value - b_value }
    acc
  end
end