Safe Haskell | Safe-Infered |
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Folds for byte streams
- fold :: Fold ByteString a -> ByteString -> a
- head :: Fold ByteString (Maybe Word8)
- last :: Fold ByteString (Maybe Word8)
- null :: Fold ByteString Bool
- length :: Num n => Fold ByteString n
- any :: (Word8 -> Bool) -> Fold ByteString Bool
- all :: (Word8 -> Bool) -> Fold ByteString Bool
- maximum :: Fold ByteString (Maybe Word8)
- minimum :: Fold ByteString (Maybe Word8)
- elem :: Word8 -> Fold ByteString Bool
- notElem :: Word8 -> Fold ByteString Bool
- find :: (Word8 -> Bool) -> Fold ByteString (Maybe Word8)
- index :: Integral n => n -> Fold ByteString (Maybe Word8)
- elemIndex :: Num n => Word8 -> Fold ByteString (Maybe n)
- findIndex :: Num n => (Word8 -> Bool) -> Fold ByteString (Maybe n)
- count :: Num n => Word8 -> Fold ByteString n
- module Control.Foldl
- module Data.ByteString
- module Data.Word
Folding
fold :: Fold ByteString a -> ByteString -> aSource
Appply a strict left Fold
to a lazy bytestring
Folds
head :: Fold ByteString (Maybe Word8)Source
Get the first byte of a byte stream or return Nothing
if the stream is
empty
last :: Fold ByteString (Maybe Word8)Source
Get the last byte of a byte stream or return Nothing
if the byte stream is
empty
length :: Num n => Fold ByteString nSource
Return the length of the byte stream in bytes
find :: (Word8 -> Bool) -> Fold ByteString (Maybe Word8)Source
(find predicate)
returns the first byte that satisfies the predicate or
Nothing
if no byte satisfies the predicate
index :: Integral n => n -> Fold ByteString (Maybe Word8)Source
(index n)
returns the n
th byte of the byte stream, or Nothing
if the
stream has an insufficient number of bytes
elemIndex :: Num n => Word8 -> Fold ByteString (Maybe n)Source
(elemIndex w8)
returns the index of the first byte that equals w8
, or
Nothing
if no byte matches
findIndex :: Num n => (Word8 -> Bool) -> Fold ByteString (Maybe n)Source
(findIndex predicate)
returns the index of the first byte that satisfies
the predicate, or Nothing
if no byte satisfies the predicate
Re-exports
Control.Foldl re-exports the Fold
type
Data.ByteString
re-exports the ByteString
type
Data.Word
re-exports the Word8
type
module Control.Foldl
module Data.ByteString
module Data.Word