jord-0.4.0.0: Geographical Position Calculations

Copyright	(c) 2018 Cedric Liegeois
License	BSD3
Maintainer	Cedric Liegeois <ofmooseandmen@yahoo.fr>
Stability	experimental
Portability	portable
Safe Haskell	Safe
Language	Haskell2010

Data.Geo.Jord.Duration

Contents

The Duration type
Smart constructors
Accessors
Read

Description

Types and functions for working with (signed) durations.

Synopsis

data Duration
toMilliseconds :: Duration -> Int
milliseconds :: Double -> Duration
hours :: Double -> Duration
minutes :: Double -> Duration
seconds :: Double -> Duration
hms :: Int -> Int -> Double -> Duration
toHours :: Duration -> Double
toMinutes :: Duration -> Double
toSeconds :: Duration -> Double
readDuration :: String -> Duration
readDurationE :: String -> Either String Duration
readDurationF :: MonadFail m => String -> m Duration

The `Duration` type

data Duration Source #

A durartion with a resolution of 1 millisecond.

Instances

Eq Duration Source #
Instance details Defined in Data.Geo.Jord.Duration Methods (==) :: Duration -> Duration -> Bool # (/=) :: Duration -> Duration -> Bool #
Read Duration Source #	See `readDuration`.
Instance details Defined in Data.Geo.Jord.Duration Methods readsPrec :: Int -> ReadS Duration # readList :: ReadS [Duration] # readPrec :: ReadPrec Duration # readListPrec :: ReadPrec [Duration] #
Show Duration Source #	show Duration as `(-)nHnMn.nS`.
Instance details Defined in Data.Geo.Jord.Duration Methods showsPrec :: Int -> Duration -> ShowS # show :: Duration -> String # showList :: [Duration] -> ShowS #
Quantity Duration Source #	Add/Subtract Durations.
Instance details Defined in Data.Geo.Jord.Duration Methods add :: Duration -> Duration -> Duration Source # sub :: Duration -> Duration -> Duration Source # zero :: Duration Source #

toMilliseconds :: Duration -> Int Source #

the number of milliseconds in duration.

Smart constructors

milliseconds :: Double -> Duration Source #

Duration from given amount of milliseconds.

hours :: Double -> Duration Source #

Duration from given amount of hours.

minutes :: Double -> Duration Source #

Duration from given amount of minutes.

seconds :: Double -> Duration Source #

Duration from given amount of seconds.

hms :: Int -> Int -> Double -> Duration Source #

Duration from hours minutes and decimal seconds.

Accessors

toHours :: Duration -> Double Source #

toHours d gets the number of hours in d.

toMinutes :: Duration -> Double Source #

toMinutes d gets the number of minutes in d.

toSeconds :: Duration -> Double Source #

toSeconds d gets the number of seconds in d.

Read

readDuration :: String -> Duration Source #

Obtains a Duration from the given string formatted (-)nHnMn.nS.

This simply calls read s :: Duration so error should be handled at the call site.

readDurationE :: String -> Either String Duration Source #

Same as readDuration but returns a Either.

readDurationF :: MonadFail m => String -> m Duration Source #

Same as readDuration but returns a MonadFail.