Imperative cascading conditionals with short-circuit returns. Declarative approach?

Questions & Help Questions
2

This is an excellent example of how useful pattern matching is…

You can solve it with case do end, but You can also use something like this.

defmodule Demo do
  @seconds_in_one_year 31_557_600
  @seconds_in_one_month 2_629_800
  
  def display_seconds(seconds) when seconds > 94_672_800, do: number_format(seconds / @seconds_in_one_year)
  def display_seconds(seconds) when seconds > 7_889_400, do: number_format(seconds / @seconds_in_one_month)
  
  defp number_format(number), do: "whatever #{number}"
end