FAQ 4.14 How can I compare two dates and find the difference?

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4.14: How can I compare two dates and find the difference?

    (contributed by brian d foy)

    You could just store all your dates as a number and then subtract. Life
    isn't always that simple though. If you want to work with formatted
    dates, the "Date::Manip", "Date::Calc", or "DateTime" modules can help


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