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Data.Time.Calendar.WeekDate

Contents

ISO 8601 Week Date format

Description

Week-based calendars

Synopsis

type Year = Integer
type WeekOfYear = Int
data DayOfWeek
- = Monday
- | Tuesday
- | Wednesday
- | Thursday
- | Friday
- | Saturday
- | Sunday
dayOfWeek :: Day -> DayOfWeek
data FirstWeekType
- = FirstWholeWeek
- | FirstMostWeek
toWeekCalendar :: FirstWeekType -> DayOfWeek -> Day -> (Year, WeekOfYear, DayOfWeek)
fromWeekCalendar :: FirstWeekType -> DayOfWeek -> Year -> WeekOfYear -> DayOfWeek -> Day
fromWeekCalendarValid :: FirstWeekType -> DayOfWeek -> Year -> WeekOfYear -> DayOfWeek -> Maybe Day
toWeekDate :: Day -> (Year, WeekOfYear, Int)
fromWeekDate :: Year -> WeekOfYear -> Int -> Day
pattern YearWeekDay :: Year -> WeekOfYear -> DayOfWeek -> Day
fromWeekDateValid :: Year -> WeekOfYear -> Int -> Maybe Day
showWeekDate :: Day -> String

Documentation

type Year = Integer Source #

Year of Common Era (when positive).

type WeekOfYear = Int Source #

Week of year, by various reckonings, generally in range 0-53 depending on reckoning.

data DayOfWeek Source #

Constructors

Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday

Instances

Instances details

Enum DayOfWeek Source #	"Circular", so for example `[Tuesday ..]` gives an endless sequence. Also: `fromEnum` gives [1 .. 7] for [Monday .. Sunday], and `toEnum` performs mod 7 to give a cycle of days.
Instance details Defined in Data.Time.Calendar.Week Methods succ :: DayOfWeek -> DayOfWeek # pred :: DayOfWeek -> DayOfWeek # toEnum :: Int -> DayOfWeek # fromEnum :: DayOfWeek -> Int # enumFrom :: DayOfWeek -> [DayOfWeek] # enumFromThen :: DayOfWeek -> DayOfWeek -> [DayOfWeek] # enumFromTo :: DayOfWeek -> DayOfWeek -> [DayOfWeek] # enumFromThenTo :: DayOfWeek -> DayOfWeek -> DayOfWeek -> [DayOfWeek] #
Eq DayOfWeek Source #
Instance details Defined in Data.Time.Calendar.Week Methods (==) :: DayOfWeek -> DayOfWeek -> Bool # (/=) :: DayOfWeek -> DayOfWeek -> Bool #
Data DayOfWeek Source #
Instance details Defined in Data.Time.Calendar.Week Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> DayOfWeek -> c DayOfWeek # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c DayOfWeek # toConstr :: DayOfWeek -> Constr # dataTypeOf :: DayOfWeek -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c DayOfWeek) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c DayOfWeek) # gmapT :: (forall b. Data b => b -> b) -> DayOfWeek -> DayOfWeek # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> DayOfWeek -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> DayOfWeek -> r # gmapQ :: (forall d. Data d => d -> u) -> DayOfWeek -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> DayOfWeek -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> DayOfWeek -> m DayOfWeek # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> DayOfWeek -> m DayOfWeek # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> DayOfWeek -> m DayOfWeek #
Ord DayOfWeek Source #
Instance details Defined in Data.Time.Calendar.Week Methods compare :: DayOfWeek -> DayOfWeek -> Ordering # (<) :: DayOfWeek -> DayOfWeek -> Bool # (<=) :: DayOfWeek -> DayOfWeek -> Bool # (>) :: DayOfWeek -> DayOfWeek -> Bool # (>=) :: DayOfWeek -> DayOfWeek -> Bool # max :: DayOfWeek -> DayOfWeek -> DayOfWeek # min :: DayOfWeek -> DayOfWeek -> DayOfWeek #
Read DayOfWeek Source #
Instance details Defined in Data.Time.Calendar.Week Methods readsPrec :: Int -> ReadS DayOfWeek # readList :: ReadS [DayOfWeek] # readPrec :: ReadPrec DayOfWeek # readListPrec :: ReadPrec [DayOfWeek] #
Show DayOfWeek Source #
Instance details Defined in Data.Time.Calendar.Week Methods showsPrec :: Int -> DayOfWeek -> ShowS # show :: DayOfWeek -> String # showList :: [DayOfWeek] -> ShowS #
Ix DayOfWeek Source #
Instance details Defined in Data.Time.Calendar.Week Methods range :: (DayOfWeek, DayOfWeek) -> [DayOfWeek] # index :: (DayOfWeek, DayOfWeek) -> DayOfWeek -> Int # unsafeIndex :: (DayOfWeek, DayOfWeek) -> DayOfWeek -> Int # inRange :: (DayOfWeek, DayOfWeek) -> DayOfWeek -> Bool # rangeSize :: (DayOfWeek, DayOfWeek) -> Int # unsafeRangeSize :: (DayOfWeek, DayOfWeek) -> Int #
NFData DayOfWeek Source #
Instance details Defined in Data.Time.Calendar.Week Methods rnf :: DayOfWeek -> () #
FormatTime DayOfWeek Source #
Instance details Defined in Data.Time.Format.Format.Instances Methods formatCharacter :: Bool -> Char -> Maybe (FormatOptions -> DayOfWeek -> String) Source #

dayOfWeek :: Day -> DayOfWeek Source #

data FirstWeekType Source #

Constructors

FirstWholeWeek	first week is the first whole week of the year
FirstMostWeek	first week is the first week with four days in the year

Instances

Instances details

Eq FirstWeekType Source #
Instance details Defined in Data.Time.Calendar.WeekDate Methods (==) :: FirstWeekType -> FirstWeekType -> Bool # (/=) :: FirstWeekType -> FirstWeekType -> Bool #

toWeekCalendar Source #

Arguments

:: FirstWeekType	how to reckon the first week of the year
-> DayOfWeek	the first day of each week
-> Day
-> (Year, WeekOfYear, DayOfWeek)

Convert to the given kind of "week calendar". Note that the year number matches the weeks, and so is not always the same as the Gregorian year number.

fromWeekCalendar Source #

Arguments

:: FirstWeekType	how to reckon the first week of the year
-> DayOfWeek	the first day of each week
-> Year
-> WeekOfYear
-> DayOfWeek
-> Day

Convert from the given kind of "week calendar". Invalid week and day values will be clipped to the correct range.

fromWeekCalendarValid Source #

Arguments

:: FirstWeekType	how to reckon the first week of the year
-> DayOfWeek	the first day of each week
-> Year
-> WeekOfYear
-> DayOfWeek
-> Maybe Day

Convert from the given kind of "week calendar". Invalid week and day values will return Nothing.

ISO 8601 Week Date format

toWeekDate :: Day -> (Year, WeekOfYear, Int) Source #

Convert to ISO 8601 Week Date format. First element of result is year, second week number (1-53), third day of week (1 for Monday to 7 for Sunday). Note that "Week" years are not quite the same as Gregorian years, as the first day of the year is always a Monday. The first week of a year is the first week to contain at least four days in the corresponding Gregorian year.

fromWeekDate :: Year -> WeekOfYear -> Int -> Day Source #

Convert from ISO 8601 Week Date format. First argument is year, second week number (1-52 or 53), third day of week (1 for Monday to 7 for Sunday). Invalid week and day values will be clipped to the correct range.

pattern YearWeekDay :: Year -> WeekOfYear -> DayOfWeek -> Day Source #

Bidirectional abstract constructor for ISO 8601 Week Date format. Invalid week values will be clipped to the correct range.

fromWeekDateValid :: Year -> WeekOfYear -> Int -> Maybe Day Source #

Convert from ISO 8601 Week Date format. First argument is year, second week number (1-52 or 53), third day of week (1 for Monday to 7 for Sunday). Invalid week and day values will return Nothing.

showWeekDate :: Day -> String Source #

Show in ISO 8601 Week Date format as yyyy-Www-d (e.g. "2006-W46-3").