• ricecake@sh.itjust.works
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    1 year ago

    So, the flip side to that is that sometimes you need to add one month to a date, because that sometimes how human systems are written.
    By not providing a function that does that, you’re just pushing the confusion down to the developer, who is more likely to make terrible errors in the process, get frustrated, or use one of N different competing libraries, each of which chose a different answer.

    Omitting functionality that can behave unintuitively in certain circumstances means leaving out a lot of functionality that people need.

    Like, “decimal numbers” go pathological in certain cases. So do Unicode characters. Don’t even bother thinking about connecting to the network.

    • railsdev@programming.dev
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      1 year ago

      In Ruby (with ActiveSupport) I would do something like 4.days.from_now or 30.days.from_now.

      If I really needed “one month from now” on some specific day of the month that not every month has I’d do:

      def 31st_of_next_month
        next_month = (Time.current.end_of_month + 1.day).beginning_of_month
        day = next_month + 31.days
        return day if day.month == next_month
      
        # last day of month if no 31st
        next_month.end_of_month.beginning_of_day
      end
      

      Disclaimer: I’m laying in bed typing this on mobile. The code probably sucks but I’m writing for illustrative purposes.