Data.Thyme.Clock.POSIX

POSIX time

Documentation

posixDayLength :: NominalDiffTime

The nominal length of a POSIX day: 86400 SI seconds.

type POSIXTime = NominalDiffTime

The nominal (ignoring leap seconds) time difference since midnight 1970-01-01, the Unix epoch. Equvialent to a normalised struct timeval.

posixTime :: Iso' UTCTime POSIXTime

Control.Lens.Iso between UTCTime and POSIXTime.

> getPOSIXTime
1459515013.527711s
> review posixTime <$> getPOSIXTime
2016-01-01 12:50:45.588729 UTC

getPOSIXTime :: IO POSIXTime

Return the current system POSIX time via gettimeofday, or getSystemTimeAsFileTime on Windows.

See also getCurrentTime, getZonedTime.

Compatibility

posixSecondsToUTCTime :: POSIXTime -> UTCTime

Construct a UTCTime from a POSIXTime.

posixSecondsToUTCTime = review posixTime
posixSecondsToUTCTime t ≡ posixTime # t

utcTimeToPOSIXSeconds :: UTCTime -> POSIXTime

Convert a UTCTime to a POSIXTime.

utcTimeToPOSIXSeconds = view posixTime