RIO.ByteString.Lazy.Partial

Lazy ByteString partial functions. Import as:

import qualified RIO.ByteString.Lazy.Partial as BL'

Basic interface

head :: ByteString -> Word8

O(1) Extract the first element of a ByteString, which must be non-empty.

last :: ByteString -> Word8

O(n/c) Extract the last element of a ByteString, which must be finite and non-empty.

tail :: ByteString -> ByteString

O(1) Extract the elements after the head of a ByteString, which must be non-empty.

init :: ByteString -> ByteString

O(n/c) Return all the elements of a ByteString except the last one.

Reducing ByteStrings (folds)

foldl1 :: (Word8 -> Word8 -> Word8) -> ByteString -> Word8

foldl1 is a variant of foldl that has no starting value argument, and thus must be applied to non-empty ByteStrings.

foldl1' :: (Word8 -> Word8 -> Word8) -> ByteString -> Word8

'foldl1\'' is like foldl1, but strict in the accumulator.

foldr1 :: (Word8 -> Word8 -> Word8) -> ByteString -> Word8

foldr1 is a variant of foldr that has no starting value argument, and thus must be applied to non-empty ByteStrings

Special folds

maximum :: ByteString -> Word8

O(n) maximum returns the maximum value from a ByteString

minimum :: ByteString -> Word8

O(n) minimum returns the minimum value from a ByteString