time-1.12.2: A time library
Safe HaskellSafe
LanguageHaskell2010

Data.Time.Calendar.WeekDate

Description

Week-based calendars

Synopsis

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 #

Instances

Instances details
NFData DayOfWeek Source # 
Instance details

Defined in Data.Time.Calendar.Week

Methods

rnf :: DayOfWeek -> () Source #

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 #

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

Ix DayOfWeek Source # 
Instance details

Defined in Data.Time.Calendar.Week

Read DayOfWeek Source # 
Instance details

Defined in Data.Time.Calendar.Week

Show DayOfWeek Source # 
Instance details

Defined in Data.Time.Calendar.Week

Eq DayOfWeek Source # 
Instance details

Defined in Data.Time.Calendar.Week

Ord DayOfWeek Source # 
Instance details

Defined in Data.Time.Calendar.Week

FormatTime DayOfWeek Source # 
Instance details

Defined in Data.Time.Format.Format.Instances

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

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").