Period is a fixed length of time. It is an elapsed time concept, which does not include the concept of Years Months or Daylight saving variations.
Name of type concept copied from NodaTime.
add : Period -> Basics.Int -> Time.Posix -> Time.Posix
Add Period count to date.
diff : Time.Posix -> Time.Posix -> PeriodDeltaRecord
Return a Period representing date difference. date1 - date2. If you add the result of this function to date2 with addend of 1 will return date1.
A Period.
Week is a convenience for users if they want to use it, it does just scale Day in functionality so is not strictly required.
PeriodDeltaRecord
values are multiplied addend on application.
{ week : Basics.Int
, day : Basics.Int
, hour : Basics.Int
, minute : Basics.Int
, second : Basics.Int
, millisecond : Basics.Int
}
A multi granularity period delta.
periodToString : Period -> String
zeroDelta : PeriodDeltaRecord
All zero delta. Useful as a starting point if you want to set a few fields only.
toTicks : Period -> Basics.Int
Return tick counts for periods. Useful to get total ticks in a Delta.
addTimeUnit : Basics.Int -> Basics.Int -> Time.Posix -> Time.Posix
Add time units.