Copyright	(c) 2016 Herbert Valerio Riedel
License	BSD3
Safe Haskell	None
Language	Haskell2010

Distribution.Client.IndexUtils.Timestamp

Description

Timestamp type used in package indexes

Synopsis

data Timestamp
nullTimestamp :: Timestamp
epochTimeToTimestamp :: EpochTime -> Maybe Timestamp
timestampToUTCTime :: Timestamp -> Maybe UTCTime
utcTimeToTimestamp :: UTCTime -> Maybe Timestamp
maximumTimestamp :: [Timestamp] -> Timestamp

Documentation

data Timestamp Source #

UNIX timestamp (expressed in seconds since unix epoch, i.e. 1970).

Instances

Instances details

Enum Timestamp Source #
Instance details Defined in Distribution.Client.IndexUtils.Timestamp Methods succ :: Timestamp -> Timestamp # pred :: Timestamp -> Timestamp # toEnum :: Int -> Timestamp # fromEnum :: Timestamp -> Int # enumFrom :: Timestamp -> [Timestamp] # enumFromThen :: Timestamp -> Timestamp -> [Timestamp] # enumFromTo :: Timestamp -> Timestamp -> [Timestamp] # enumFromThenTo :: Timestamp -> Timestamp -> Timestamp -> [Timestamp] #
Eq Timestamp Source #
Instance details Defined in Distribution.Client.IndexUtils.Timestamp Methods (==) :: Timestamp -> Timestamp -> Bool # (/=) :: Timestamp -> Timestamp -> Bool #
Ord Timestamp Source #
Instance details Defined in Distribution.Client.IndexUtils.Timestamp Methods compare :: Timestamp -> Timestamp -> Ordering # (<) :: Timestamp -> Timestamp -> Bool # (<=) :: Timestamp -> Timestamp -> Bool # (>) :: Timestamp -> Timestamp -> Bool # (>=) :: Timestamp -> Timestamp -> Bool # max :: Timestamp -> Timestamp -> Timestamp # min :: Timestamp -> Timestamp -> Timestamp #
Show Timestamp Source #
Instance details Defined in Distribution.Client.IndexUtils.Timestamp Methods showsPrec :: Int -> Timestamp -> ShowS # show :: Timestamp -> String # showList :: [Timestamp] -> ShowS #
Generic Timestamp Source #
Instance details Defined in Distribution.Client.IndexUtils.Timestamp Associated Types type Rep Timestamp :: Type -> Type # Methods from :: Timestamp -> Rep Timestamp x # to :: Rep Timestamp x -> Timestamp #
Binary Timestamp Source #
Instance details Defined in Distribution.Client.IndexUtils.Timestamp Methods put :: Timestamp -> Put # get :: Get Timestamp # putList :: [Timestamp] -> Put #
NFData Timestamp Source #
Instance details Defined in Distribution.Client.IndexUtils.Timestamp Methods rnf :: Timestamp -> () #
Structured Timestamp Source #
Instance details Defined in Distribution.Client.IndexUtils.Timestamp Methods structure :: Proxy Timestamp -> Structure # structureHash' :: Tagged Timestamp MD5
Parsec Timestamp Source #
Instance details Defined in Distribution.Client.IndexUtils.Timestamp Methods parsec :: CabalParsing m => m Timestamp #
Pretty Timestamp Source #
Instance details Defined in Distribution.Client.IndexUtils.Timestamp Methods pretty :: Timestamp -> Doc # prettyVersioned :: CabalSpecVersion -> Timestamp -> Doc #
type Rep Timestamp Source #
Instance details Defined in Distribution.Client.IndexUtils.Timestamp type Rep Timestamp = D1 ('MetaData "Timestamp" "Distribution.Client.IndexUtils.Timestamp" "cabal-install-3.8.1.0-7iNu5HGLMqL9QLfLAUJqbd" 'True) (C1 ('MetaCons "TS" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Int64)))

nullTimestamp :: Timestamp Source #

Special timestamp value to be used when timestamp is missingunknowninvalid

epochTimeToTimestamp :: EpochTime -> Maybe Timestamp Source #

timestampToUTCTime :: Timestamp -> Maybe UTCTime Source #

utcTimeToTimestamp :: UTCTime -> Maybe Timestamp Source #

maximumTimestamp :: [Timestamp] -> Timestamp Source #

Compute the maximum Timestamp value

Returns nullTimestamp for the empty list. Also note that nullTimestamp compares as smaller to all non-nullTimestamp values.