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GHC 9.14.1 · lts/ghc-9.14.x · 99ffbb8 · 2026-10-19

Modulefs-api-0.4.0.0Haskell2010

System.FS.CRC

Support for CRC

Contents

Wrap digest functionality
File system functions with CRC functionality

Synopsis

newtype CRC
value computeCRC
value initCRC
value updateCRC
value hGetAllAtCRC
value hGetExactlyAtCRC
value hPutAllCRC

Packagefs-api-0.4.0.0
Exports7
LanguageHaskell2010
LicenceApache-2.0
SourceCRC.hs

Wrap digest functionality

newtypenewtype CRC

Constructors

CRC
- getCRC :: Word32

Instances5Eq, Show, Generic, Storable, Rep

Eq CRCDefined in fs-api-0.4.0.0 · System.FS.CRC
Show CRCDefined in fs-api-0.4.0.0 · System.FS.CRC
Generic CRCDefined in fs-api-0.4.0.0 · System.FS.CRC
Storable CRCDefined in fs-api-0.4.0.0 · System.FS.CRC
type Rep CRC = D1 ('MetaData "CRC" "System.FS.CRC" "fs-api-0.4.0.0-42sYm696jAx3OmtFDTlirh" 'True) (C1 ('MetaCons "CRC" 'PrefixI 'True) (S1 ('MetaSel ('Just "getCRC") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32)))Defined in fs-api-0.4.0.0 · System.FS.CRC

valuecomputeCRC :: CRC32 a => a -> CRC

valueinitCRC :: CRC

valueupdateCRC :: CRC32 a => a -> CRC -> CRC

File system functions with CRC functionality

valuehGetAllAtCRC

:: Monad m
=> HasFS m h
-> Handle h
-> AbsOffset
The offset at which to read.
-> m (ByteString, CRC)

Variation on hGetAllAt that also computes a CRC

valuehGetExactlyAtCRC

:: (HasCallStack, MonadThrow m)
=> HasFS m h
-> Handle h
-> Word64
The number of bytes to read.
-> AbsOffset
The offset at which to read.
-> m (ByteString, CRC)

Variation on hGetExactlyAt that also computes a CRC

valuehPutAllCRC

:: (HasCallStack, Monad m)
=> HasFS m h
-> Handle h
-> ByteString
-> m (Word64, CRC)

Variation on hPutAll that also computes a CRC