Hi,

It would be nice if functions for formatting Date and Time types exist. Currently, if one wants to format a Date, a dummy Time value needs to be be created to convert to a DateTime for formatting; likewise for the Time type.

I'm not exactly sure what the best way to do this would be. Maybe:

data PlacholderFormatterCommand = Placeholder String

data DateFormatterCommand
  = YearFull
  | YearTwoDigits
  | YearAbsolute
  | MonthFull
    [...]
  | PlaceholderFormatterCommand

data TimeFormatterCommand
  = [...]
  | PlaceholderFormatterCommand

data DateTimeFormatterCommand
  = DateFormatterCommand
  | TimeFormatterCommand

The main issue I see with this approach are FormatterCommands that are applicable to both Dates and Times, namely Placeholder and UnixTimestamp. Maybe there is a more elegant solution involving type classes?