| License | BSD-style |
|---|---|
| Maintainer | Vincent Hanquez <vincent@snarc.org> |
| Stability | experimental |
| Portability | unknown |
| Safe Haskell | None |
| Language | Haskell2010 |
Data.Hourglass
Description
Types and methods for time manipulation.
The most basic type for time representation is Elapsed, which represent a number of elapsed seconds since the unix epoch.
Every other defined types can be convert to and from Elapsed type:
timeGetElapsed (Date 1 2 3) :: Elapsed timeFromElapsed 123 :: DateTime
Local time is represented by any other time types (Elapsed, Date, DateTime, ..), but augmented by a Timezone offset in minutes.
localTime (Date 2014 May 4) 600 -- local time at UTC+10 of May 4th 2014
Synopsis
-
class
Timeable
t =>
Time
t
where
- timeFromElapsedP :: ElapsedP -> t
- timeFromElapsed :: Elapsed -> t
-
class
Timeable
t
where
- timeGetElapsedP :: t -> ElapsedP
- timeGetElapsed :: t -> Elapsed
- timeGetNanoSeconds :: t -> NanoSeconds
- newtype Elapsed = Elapsed Seconds
- data ElapsedP = ElapsedP ! Elapsed ! NanoSeconds
- timeConvert :: ( Timeable t1, Time t2) => t1 -> t2
- timeGetDate :: Timeable t => t -> Date
- timeGetDateTimeOfDay :: Timeable t => t -> DateTime
- timeGetTimeOfDay :: Timeable t => t -> TimeOfDay
-
data
Duration
=
Duration
{
- durationHours :: ! Hours
- durationMinutes :: ! Minutes
- durationSeconds :: ! Seconds
- durationNs :: ! NanoSeconds
-
data
Period
=
Period
{
- periodYears :: ! Int
- periodMonths :: ! Int
- periodDays :: ! Int
-
class
TimeInterval
i
where
- toSeconds :: i -> Seconds
- fromSeconds :: Seconds -> (i, Seconds )
- timeAdd :: ( Time t, TimeInterval ti) => t -> ti -> t
- timeDiff :: ( Timeable t1, Timeable t2) => t1 -> t2 -> Seconds
- timeDiffP :: ( Timeable t1, Timeable t2) => t1 -> t2 -> ( Seconds , NanoSeconds )
- dateAddPeriod :: Date -> Period -> Date
- module Data.Hourglass.Types
-
data
TimeFormatElem
- = Format_Year2
- | Format_Year4
- | Format_Year
- | Format_Month
- | Format_Month2
- | Format_MonthName_Short
- | Format_DayYear
- | Format_Day
- | Format_Day2
- | Format_Hour
- | Format_Minute
- | Format_Second
- | Format_UnixSecond
- | Format_MilliSecond
- | Format_MicroSecond
- | Format_NanoSecond
- | Format_Precision Int
- | Format_TimezoneName
- | Format_TzHM_Colon_Z
- | Format_TzHM_Colon
- | Format_TzHM
- | Format_Tz_Offset
- | Format_Spaces
- | Format_Text Char
- | Format_Fct TimeFormatFct
-
data
TimeFormatFct
=
TimeFormatFct
{
- timeFormatFctName :: String
- timeFormatParse :: DateTime -> String -> Either String ( DateTime , String )
- timeFormatPrint :: DateTime -> String
- newtype TimeFormatString = TimeFormatString [ TimeFormatElem ]
-
class
TimeFormat
format
where
- toFormat :: format -> TimeFormatString
- data ISO8601_Date = ISO8601_Date
- data ISO8601_DateAndTime = ISO8601_DateAndTime
- timePrint :: ( TimeFormat format, Timeable t) => format -> t -> String
- timeParse :: TimeFormat format => format -> String -> Maybe DateTime
- timeParseE :: TimeFormat format => format -> String -> Either ( TimeFormatElem , String ) ( DateTime , String )
- localTimePrint :: ( TimeFormat format, Timeable t) => format -> LocalTime t -> String
- localTimeParse :: TimeFormat format => format -> String -> Maybe ( LocalTime DateTime )
- localTimeParseE :: TimeFormat format => format -> String -> Either ( TimeFormatElem , String ) ( LocalTime DateTime , String )
- data LocalTime t
- localTime :: Time t => TimezoneOffset -> t -> LocalTime t
- localTimeUnwrap :: LocalTime t -> t
- localTimeToGlobal :: Time t => LocalTime t -> t
- localTimeFromGlobal :: Time t => t -> LocalTime t
- localTimeGetTimezone :: LocalTime t -> TimezoneOffset
- localTimeSetTimezone :: Time t => TimezoneOffset -> LocalTime t -> LocalTime t
- localTimeConvert :: ( Time t1, Time t2) => LocalTime t1 -> LocalTime t2
-
class
Timezone
tz
where
- timezoneOffset :: tz -> Int
- timezoneName :: tz -> String
- data UTC = UTC
- newtype TimezoneMinutes = TimezoneMinutes Int
- isLeapYear :: Int -> Bool
- getWeekDay :: Date -> WeekDay
- getDayOfTheYear :: Date -> Int
- daysInMonth :: Int -> Month -> Int
Generic time classes
class Timeable t => Time t where Source #
Represent time types that can be created from other time types.
Every conversion happens throught ElapsedP or Elapsed types.
Minimal complete definition
Methods
timeFromElapsedP :: ElapsedP -> t Source #
convert from a number of elapsed seconds and nanoseconds to another time representation
timeFromElapsed :: Elapsed -> t Source #
convert from a number of elapsed seconds and nanoseconds to another time representation
defaults to timeFromElapsedP unless defined explicitely by an instance.
Instances
| Time CTime Source # | |
|
Defined in Data.Hourglass.Time |
|
| Time DateTime Source # | |
|
Defined in Data.Hourglass.Time Methods timeFromElapsedP :: ElapsedP -> DateTime Source # timeFromElapsed :: Elapsed -> DateTime Source # |
|
| Time Date Source # | |
|
Defined in Data.Hourglass.Time |
|
| Time ElapsedP Source # | |
|
Defined in Data.Hourglass.Time Methods timeFromElapsedP :: ElapsedP -> ElapsedP Source # timeFromElapsed :: Elapsed -> ElapsedP Source # |
|
| Time Elapsed Source # | |
|
Defined in Data.Hourglass.Time Methods timeFromElapsedP :: ElapsedP -> Elapsed Source # timeFromElapsed :: Elapsed -> Elapsed Source # |
|
| Epoch epoch => Time ( ElapsedSinceP epoch) Source # | |
|
Defined in Data.Hourglass.Epoch Methods timeFromElapsedP :: ElapsedP -> ElapsedSinceP epoch Source # timeFromElapsed :: Elapsed -> ElapsedSinceP epoch Source # |
|
| Epoch epoch => Time ( ElapsedSince epoch) Source # | |
|
Defined in Data.Hourglass.Epoch Methods timeFromElapsedP :: ElapsedP -> ElapsedSince epoch Source # timeFromElapsed :: Elapsed -> ElapsedSince epoch Source # |
|
class Timeable t where Source #
Timeable represent every type that can be made to look like time types.
- can be converted to ElapsedP and Elapsed
- optionally have a timezone associated
- have nanoseconds accessor (which can return 0 when the type is not more precise than seconds)
Minimal complete definition
Methods
timeGetElapsedP :: t -> ElapsedP Source #
convert a time representation to the number of elapsed seconds and nanoseconds to a specific epoch
timeGetElapsed :: t -> Elapsed Source #
convert a time representation to the number of elapsed seconds to a specific epoch.
defaults to timeGetElapsedP unless defined explicitely by an instance
timeGetNanoSeconds :: t -> NanoSeconds Source #
return the number of optional nanoseconds.
If the underlaying type is not precise enough to record nanoseconds (or any variant between seconds and nanoseconds), 0 should be returned
defaults to
timeGetElapsedP
unless defined explicitely by an instance,
for efficiency reason, it's a good idea to override this methods if
you know the type is not more precise than Seconds.
Instances
Elapsed time
A number of seconds elapsed since the unix epoch.
Instances
| Eq Elapsed Source # | |
| Data Elapsed Source # | |
|
Defined in Time.Types Methods gfoldl :: ( forall d b. Data d => c (d -> b) -> d -> c b) -> ( forall g. g -> c g) -> Elapsed -> c Elapsed Source # gunfold :: ( forall b r. Data b => c (b -> r) -> c r) -> ( forall r. r -> c r) -> Constr -> c Elapsed Source # toConstr :: Elapsed -> Constr Source # dataTypeOf :: Elapsed -> DataType Source # dataCast1 :: Typeable t => ( forall d. Data d => c (t d)) -> Maybe (c Elapsed ) Source # dataCast2 :: Typeable t => ( forall d e. ( Data d, Data e) => c (t d e)) -> Maybe (c Elapsed ) Source # gmapT :: ( forall b. Data b => b -> b) -> Elapsed -> Elapsed Source # gmapQl :: (r -> r' -> r) -> r -> ( forall d. Data d => d -> r') -> Elapsed -> r Source # gmapQr :: forall r r'. (r' -> r -> r) -> r -> ( forall d. Data d => d -> r') -> Elapsed -> r Source # gmapQ :: ( forall d. Data d => d -> u) -> Elapsed -> [u] Source # gmapQi :: Int -> ( forall d. Data d => d -> u) -> Elapsed -> u Source # gmapM :: Monad m => ( forall d. Data d => d -> m d) -> Elapsed -> m Elapsed Source # gmapMp :: MonadPlus m => ( forall d. Data d => d -> m d) -> Elapsed -> m Elapsed Source # gmapMo :: MonadPlus m => ( forall d. Data d => d -> m d) -> Elapsed -> m Elapsed Source # |
|
| Num Elapsed Source # | |
|
Defined in Time.Types |
|
| Ord Elapsed Source # | |
|
Defined in Time.Types |
|
| Read Elapsed Source # | |
| Show Elapsed Source # | |
| NFData Elapsed Source # | |
|
Defined in Time.Types |
|
| Time Elapsed Source # | |
|
Defined in Data.Hourglass.Time Methods timeFromElapsedP :: ElapsedP -> Elapsed Source # timeFromElapsed :: Elapsed -> Elapsed Source # |
|
| Timeable Elapsed Source # | |
|
Defined in Data.Hourglass.Time Methods timeGetElapsedP :: Elapsed -> ElapsedP Source # timeGetElapsed :: Elapsed -> Elapsed Source # |
|
A number of seconds and nanoseconds elapsed since the unix epoch.
Constructors
| ElapsedP ! Elapsed ! NanoSeconds |
Instances
Generic conversion
timeConvert :: ( Timeable t1, Time t2) => t1 -> t2 Source #
Convert one time representation into another one
The return type need to be infer by the context.
If the context cannot be infer through this, some specialized functions are available for built-in types:
Date and Time
timeGetDate :: Timeable t => t -> Date Source #
Get the calendar Date (year-month-day) from a time representation
specialization of
timeConvert
timeGetDateTimeOfDay :: Timeable t => t -> DateTime Source #
Get the date and time of day from a time representation
specialization of
timeConvert
timeGetTimeOfDay :: Timeable t => t -> TimeOfDay Source #
Get the day time (hours:minutes:seconds) from a time representation
specialization of
timeConvert
Arithmetic
An amount of time in terms of constant value like hours (3600 seconds), minutes (60 seconds), seconds and nanoseconds.
Constructors
| Duration | |
|
Fields
|
|
Instances
| Eq Duration Source # | |
| Data Duration Source # | |
|
Defined in Data.Hourglass.Diff Methods gfoldl :: ( forall d b. Data d => c (d -> b) -> d -> c b) -> ( forall g. g -> c g) -> Duration -> c Duration Source # gunfold :: ( forall b r. Data b => c (b -> r) -> c r) -> ( forall r. r -> c r) -> Constr -> c Duration Source # toConstr :: Duration -> Constr Source # dataTypeOf :: Duration -> DataType Source # dataCast1 :: Typeable t => ( forall d. Data d => c (t d)) -> Maybe (c Duration ) Source # dataCast2 :: Typeable t => ( forall d e. ( Data d, Data e) => c (t d e)) -> Maybe (c Duration ) Source # gmapT :: ( forall b. Data b => b -> b) -> Duration -> Duration Source # gmapQl :: (r -> r' -> r) -> r -> ( forall d. Data d => d -> r') -> Duration -> r Source # gmapQr :: forall r r'. (r' -> r -> r) -> r -> ( forall d. Data d => d -> r') -> Duration -> r Source # gmapQ :: ( forall d. Data d => d -> u) -> Duration -> [u] Source # gmapQi :: Int -> ( forall d. Data d => d -> u) -> Duration -> u Source # gmapM :: Monad m => ( forall d. Data d => d -> m d) -> Duration -> m Duration Source # gmapMp :: MonadPlus m => ( forall d. Data d => d -> m d) -> Duration -> m Duration Source # gmapMo :: MonadPlus m => ( forall d. Data d => d -> m d) -> Duration -> m Duration Source # |
|
| Ord Duration Source # | |
|
Defined in Data.Hourglass.Diff |
|
| Read Duration Source # | |
| Show Duration Source # | |
| Semigroup Duration Source # | |
| Monoid Duration Source # | |
| NFData Duration Source # | |
|
Defined in Data.Hourglass.Diff |
|
| TimeInterval Duration Source # | |
An amount of conceptual calendar time in terms of years, months and days.
This allow calendar manipulation, representing things like days and months irrespective on how long those are related to timezone and daylight changes.
See
Duration
for the time-based equivalent to this class.
Constructors
| Period | |
|
Fields
|
|
Instances
| Eq Period Source # | |
| Data Period Source # | |
|
Defined in Data.Hourglass.Diff Methods gfoldl :: ( forall d b. Data d => c (d -> b) -> d -> c b) -> ( forall g. g -> c g) -> Period -> c Period Source # gunfold :: ( forall b r. Data b => c (b -> r) -> c r) -> ( forall r. r -> c r) -> Constr -> c Period Source # toConstr :: Period -> Constr Source # dataTypeOf :: Period -> DataType Source # dataCast1 :: Typeable t => ( forall d. Data d => c (t d)) -> Maybe (c Period ) Source # dataCast2 :: Typeable t => ( forall d e. ( Data d, Data e) => c (t d e)) -> Maybe (c Period ) Source # gmapT :: ( forall b. Data b => b -> b) -> Period -> Period Source # gmapQl :: (r -> r' -> r) -> r -> ( forall d. Data d => d -> r') -> Period -> r Source # gmapQr :: forall r r'. (r' -> r -> r) -> r -> ( forall d. Data d => d -> r') -> Period -> r Source # gmapQ :: ( forall d. Data d => d -> u) -> Period -> [u] Source # gmapQi :: Int -> ( forall d. Data d => d -> u) -> Period -> u Source # gmapM :: Monad m => ( forall d. Data d => d -> m d) -> Period -> m Period Source # gmapMp :: MonadPlus m => ( forall d. Data d => d -> m d) -> Period -> m Period Source # gmapMo :: MonadPlus m => ( forall d. Data d => d -> m d) -> Period -> m Period Source # |
|
| Ord Period Source # | |
| Read Period Source # | |
| Show Period Source # | |
| Semigroup Period Source # | |
| Monoid Period Source # | |
| NFData Period Source # | |
|
Defined in Data.Hourglass.Diff |
|
class TimeInterval i where Source #
Represent any time interval that has an equivalent value to a number of seconds.
Instances
| TimeInterval Hours Source # | |
| TimeInterval Minutes Source # | |
| TimeInterval Seconds Source # | |
| TimeInterval NanoSeconds Source # | |
|
Defined in Time.Types Methods toSeconds :: NanoSeconds -> Seconds Source # fromSeconds :: Seconds -> ( NanoSeconds , Seconds ) Source # |
|
| TimeInterval Duration Source # | |
timeAdd :: ( Time t, TimeInterval ti) => t -> ti -> t Source #
add some time interval to a time representation and returns this new time representation
example:
t1 `timeAdd` mempty { durationHours = 12 }
timeDiff :: ( Timeable t1, Timeable t2) => t1 -> t2 -> Seconds Source #
Get the difference in seconds between two time representation
effectively:
t2 `timeDiff` t1 = t2 - t1
timeDiffP :: ( Timeable t1, Timeable t2) => t1 -> t2 -> ( Seconds , NanoSeconds ) Source #
Get the difference in seconds and nanoseconds between two time representation
effectively:
@t2 `timeDiffP` t1 = t2 - t1
module Data.Hourglass.Types
Parsing and Printing
Format strings
data TimeFormatElem Source #
All the various formatter that can be part of a time format string
Constructors
| Format_Year2 |
2 digit years (70 is 1970, 69 is 2069) |
| Format_Year4 |
4 digits years |
| Format_Year |
any digits years |
| Format_Month |
months (1 to 12) |
| Format_Month2 |
months padded to 2 chars (01 to 12) |
| Format_MonthName_Short |
name of the month short (
|
| Format_DayYear |
day of the year (1 to 365, 366 for leap years) |
| Format_Day |
day of the month (1 to 31) |
| Format_Day2 |
day of the month (01 to 31) |
| Format_Hour |
hours (0 to 23) |
| Format_Minute |
minutes (0 to 59) |
| Format_Second |
seconds (0 to 59, 60 for leap seconds) |
| Format_UnixSecond |
number of seconds since 1 jan 1970. unix epoch. |
| Format_MilliSecond |
Milliseconds (000 to 999) |
| Format_MicroSecond |
MicroSeconds (000000 to 999999) |
| Format_NanoSecond |
NanoSeconds (000000000 to 999999999) |
| Format_Precision Int |
sub seconds display with a precision of N digits. with N between 1 and 9 |
| Format_TimezoneName |
timezone name (e.g. GMT, PST). not implemented yet | Format_TimezoneOffset -- ^ timeoffset offset (+02:00) |
| Format_TzHM_Colon_Z |
zero UTC offset (Z) or timeoffset with colon (+02:00) |
| Format_TzHM_Colon |
timeoffset offset with colon (+02:00) |
| Format_TzHM |
timeoffset offset (+0200) |
| Format_Tz_Offset |
timeoffset in minutes |
| Format_Spaces |
one or many space-like chars |
| Format_Text Char |
a verbatim char |
| Format_Fct TimeFormatFct |
Instances
| Eq TimeFormatElem Source # | |
|
Defined in Data.Hourglass.Format Methods (==) :: TimeFormatElem -> TimeFormatElem -> Bool Source # (/=) :: TimeFormatElem -> TimeFormatElem -> Bool Source # |
|
| Show TimeFormatElem Source # | |
|
Defined in Data.Hourglass.Format |
|
| TimeFormat [ TimeFormatElem ] Source # | |
|
Defined in Data.Hourglass.Format Methods toFormat :: [ TimeFormatElem ] -> TimeFormatString Source # |
|
data TimeFormatFct Source #
A generic format function composed of a parser and a printer.
Constructors
| TimeFormatFct | |
|
Fields
|
|
Instances
| Eq TimeFormatFct Source # | |
|
Defined in Data.Hourglass.Format Methods (==) :: TimeFormatFct -> TimeFormatFct -> Bool Source # (/=) :: TimeFormatFct -> TimeFormatFct -> Bool Source # |
|
| Show TimeFormatFct Source # | |
|
Defined in Data.Hourglass.Format |
|
newtype TimeFormatString Source #
A time format string, composed of list of
TimeFormatElem
Constructors
| TimeFormatString [ TimeFormatElem ] |
Instances
| Eq TimeFormatString Source # | |
|
Defined in Data.Hourglass.Format Methods (==) :: TimeFormatString -> TimeFormatString -> Bool Source # (/=) :: TimeFormatString -> TimeFormatString -> Bool Source # |
|
| Show TimeFormatString Source # | |
|
Defined in Data.Hourglass.Format |
|
| TimeFormat TimeFormatString Source # | |
|
Defined in Data.Hourglass.Format Methods |
|
class TimeFormat format where Source #
A generic class for anything that can be considered a Time Format string.
Methods
toFormat :: format -> TimeFormatString Source #
Instances
| TimeFormat String Source # | |
|
Defined in Data.Hourglass.Format Methods toFormat :: String -> TimeFormatString Source # |
|
| TimeFormat ISO8601_DateAndTime Source # | |
|
Defined in Data.Hourglass.Format Methods toFormat :: ISO8601_DateAndTime -> TimeFormatString Source # |
|
| TimeFormat ISO8601_Date Source # | |
|
Defined in Data.Hourglass.Format Methods |
|
| TimeFormat TimeFormatString Source # | |
|
Defined in Data.Hourglass.Format Methods |
|
| TimeFormat [ TimeFormatElem ] Source # | |
|
Defined in Data.Hourglass.Format Methods toFormat :: [ TimeFormatElem ] -> TimeFormatString Source # |
|
Common built-in formats
data ISO8601_Date Source #
ISO8601 Date format string.
e.g. 2014-04-05
Constructors
| ISO8601_Date |
Instances
| Eq ISO8601_Date Source # | |
|
Defined in Data.Hourglass.Format Methods (==) :: ISO8601_Date -> ISO8601_Date -> Bool Source # (/=) :: ISO8601_Date -> ISO8601_Date -> Bool Source # |
|
| Show ISO8601_Date Source # | |
|
Defined in Data.Hourglass.Format |
|
| TimeFormat ISO8601_Date Source # | |
|
Defined in Data.Hourglass.Format Methods |
|
data ISO8601_DateAndTime Source #
ISO8601 Date and Time format string.
e.g. 2014-04-05T17:25:04+00:00 2014-04-05T17:25:04Z
Constructors
| ISO8601_DateAndTime |
Instances
| Eq ISO8601_DateAndTime Source # | |
|
Defined in Data.Hourglass.Format Methods (==) :: ISO8601_DateAndTime -> ISO8601_DateAndTime -> Bool Source # (/=) :: ISO8601_DateAndTime -> ISO8601_DateAndTime -> Bool Source # |
|
| Show ISO8601_DateAndTime Source # | |
|
Defined in Data.Hourglass.Format |
|
| TimeFormat ISO8601_DateAndTime Source # | |
|
Defined in Data.Hourglass.Format Methods toFormat :: ISO8601_DateAndTime -> TimeFormatString Source # |
|
Format methods
Arguments
| :: ( TimeFormat format, Timeable t) | |
| => format |
the format to use for printing |
| -> t |
the global time to print |
| -> String |
the resulting string |
Pretty print time to a string
The actual output is determined by the format used
timeParse :: TimeFormat format => format -> String -> Maybe DateTime Source #
Just like
localTimeParse
but the time is automatically converted to global time.
timeParseE :: TimeFormat format => format -> String -> Either ( TimeFormatElem , String ) ( DateTime , String ) Source #
like
localTimeParseE
but the time value is automatically converted to global time.
Arguments
| :: ( TimeFormat format, Timeable t) | |
| => format |
the format to use for printing |
| -> LocalTime t |
the local time to print |
| -> String |
the resulting local time string |
Pretty print local time to a string.
The actual output is determined by the format used.
Arguments
| :: TimeFormat format | |
| => format |
the format to use for parsing |
| -> String |
the string to parse |
| -> Maybe ( LocalTime DateTime ) |
Try parsing a string as time using the format explicitely specified
Unparsed characters are ignored and the error handling is simplified
for more elaborate need use
localTimeParseE
.
Arguments
| :: TimeFormat format | |
| => format |
the format to use for parsing |
| -> String |
the string to parse |
| -> Either ( TimeFormatElem , String ) ( LocalTime DateTime , String ) |
Try parsing a string as time using the format explicitely specified
On failure, the parsing function returns the reason of the failure. If parsing is successful, return the date parsed with the remaining unparsed string
Local time
Local time type
Local time representation
this is a time representation augmented by a timezone to get back to a global time, the timezoneOffset needed to be added to the local time.
Instances
| Functor LocalTime Source # | |
| Eq t => Eq ( LocalTime t) Source # | |
| ( Ord t, Time t) => Ord ( LocalTime t) Source # | |
|
Defined in Data.Hourglass.Local Methods compare :: LocalTime t -> LocalTime t -> Ordering Source # (<) :: LocalTime t -> LocalTime t -> Bool Source # (<=) :: LocalTime t -> LocalTime t -> Bool Source # (>) :: LocalTime t -> LocalTime t -> Bool Source # (>=) :: LocalTime t -> LocalTime t -> Bool Source # |
|
| Show t => Show ( LocalTime t) Source # | |
Local time creation and manipulation
localTime :: Time t => TimezoneOffset -> t -> LocalTime t Source #
Create a local time type from a timezone and a time type.
The time value is assumed to be local to the timezone offset set, so no transformation is done.
localTimeUnwrap :: LocalTime t -> t Source #
unwrap the LocalTime value. the time value is local.
localTimeToGlobal :: Time t => LocalTime t -> t Source #
Get back a global time value
localTimeFromGlobal :: Time t => t -> LocalTime t Source #
create a local time value from a global one
localTimeGetTimezone :: LocalTime t -> TimezoneOffset Source #
get the timezone associated with LocalTime
localTimeSetTimezone :: Time t => TimezoneOffset -> LocalTime t -> LocalTime t Source #
Change the timezone, and adjust the local value to represent the new local value.
localTimeConvert :: ( Time t1, Time t2) => LocalTime t1 -> LocalTime t2 Source #
convert the local time representation to another time representation determined by context.
class Timezone tz where Source #
standard representation for timezone
Minimal complete definition
Methods
timezoneOffset :: tz -> Int Source #
offset in minutes from UTC. valid values should be between -12*60 to +14*60
timezoneName :: tz -> String Source #
the name of the timezone. by default will be +-HH:MM encoding.
Instances
| Timezone UTC Source # | |
|
Defined in Data.Hourglass.Zone |
|
| Timezone TimezoneMinutes Source # | |
|
Defined in Data.Hourglass.Zone Methods timezoneOffset :: TimezoneMinutes -> Int Source # timezoneName :: TimezoneMinutes -> String Source # |
|
Universal Time Coordinated. The generic computer "timezone".
Constructors
| UTC |
newtype TimezoneMinutes Source #
Simple timezone containing the number of minutes difference with UTC.
Valid values should be between -12*60 to +14*60
Constructors
| TimezoneMinutes Int |
Instances
| Eq TimezoneMinutes Source # | |
|
Defined in Data.Hourglass.Zone Methods (==) :: TimezoneMinutes -> TimezoneMinutes -> Bool Source # (/=) :: TimezoneMinutes -> TimezoneMinutes -> Bool Source # |
|
| Ord TimezoneMinutes Source # | |
|
Defined in Data.Hourglass.Zone Methods compare :: TimezoneMinutes -> TimezoneMinutes -> Ordering Source # (<) :: TimezoneMinutes -> TimezoneMinutes -> Bool Source # (<=) :: TimezoneMinutes -> TimezoneMinutes -> Bool Source # (>) :: TimezoneMinutes -> TimezoneMinutes -> Bool Source # (>=) :: TimezoneMinutes -> TimezoneMinutes -> Bool Source # max :: TimezoneMinutes -> TimezoneMinutes -> TimezoneMinutes Source # min :: TimezoneMinutes -> TimezoneMinutes -> TimezoneMinutes Source # |
|
| Show TimezoneMinutes Source # | |
|
Defined in Data.Hourglass.Zone |
|
| Timezone TimezoneMinutes Source # | |
|
Defined in Data.Hourglass.Zone Methods timezoneOffset :: TimezoneMinutes -> Int Source # timezoneName :: TimezoneMinutes -> String Source # |
|
Calendar misc functions
isLeapYear :: Int -> Bool Source #
Return if this year is a leap year (366 days) or not (365 days in a year)
getWeekDay :: Date -> WeekDay Source #
Return the day of the week a specific date fall in
getDayOfTheYear :: Date -> Int Source #
return the day of the year where Jan 1 is 0
between 0 and 364. 365 for leap years