ModuleCabal-3.12.1.0Haskell2010

Distribution.Utils.IOData

IOData & IODataMode type

6 declarations

datadata IOData

Represents either textual or binary data passed via I/O functions which support binary/text mode

Instances1NFData

datadata IODataMode mode where

Phantom-typed GADT representation of the mode of IOData, containing no other data.

classclass NFData mode => KnownIODataMode mode where

hGetIODataContents :: Handle -> IO mode
IOData Wrapper for hGetContents
Note: This operation uses lazy I/O. Use NFData to force all data to be read and consequently the internal file handle to be closed.
toIOData :: mode -> IOData
iodataMode :: IODataMode mode

Instances2KnownIODataMode

KnownIODataMode ByteStringDefined in Cabal-3.12.1.0 · Distribution.Utils.IOData
a ~ Char => KnownIODataMode [a]Defined in Cabal-3.12.1.0 · Distribution.Utils.IOData

valuewithIOData :: IOData -> (forall mode. IODataMode mode -> mode -> r) -> r

Applies a function polymorphic over IODataMode to an IOData value.

valuenull :: IOData -> Bool

Test whether IOData is empty

valuehPutContents :: Handle -> IOData -> IO ()

This is the dual operation ot hGetIODataContents, and consequently the handle is closed with hClose.

Note: this performs lazy-IO.