relative-date-0.0.1: Durations and generalized time parsing

Data.Duration

Synopsis

Documentation

type Duration = DateTime -> DateTime Source

data Days Source

Used as values for toDuration

Constructors

Day
Week
Month
Year

Instances

Eq Days
Ord Days
Show Days

toDuration :: Integer -> Days -> Duration Source

Creates a duration for the number of periods of days specified

fixTime :: DateTime -> Int -> DateTime Source

Increments a DateTime to be on the weekday (0-6) given

zellerCongruence :: Integer -> Int -> Int -> Integer Source

Given year, month and day, gives the (0 based) day of the week

assemble :: DateTime -> Duration -> Maybe Duration -> [DateTime]Source

Creates a list of DateTimes given a start date, an interval duration, and an end duration from the start date

addDays :: Integer -> DateTime -> DateTime Source

addWeeks :: Integer -> DateTime -> DateTime Source

addMonths :: Integer -> DateTime -> DateTime Source

addYears :: Integer -> DateTime -> DateTime Source