Library for streamly and bytestring interoperation. https://github.com/psibi/streamly-bytestring#readme
|Stackage Nightly 2020-04-07:||0.1.2|
|Latest on Hackage:||0.1.2|
Library for streamly and bytestring interoperation.
If you are writing code from scratch, please use
is a generalization of
ByteString and better integrated with streamly.
This library is to enable interoperation of streamly with existing code that
The package provides APIs to interconvert between strict
Array Word8 and between lazy
Bytestring and stream of
The interconversion in the case of strict
Bytestring and streamly
Array Word8 has no overhead as the underlying representation of ByteString and Array
are the same, we just need to rewrap the data in a different type.
This is a dumb program that counts the number of bytes in a file.
import Streamly import qualified Streamly.Prelude as S import qualified Data.ByteString as BS import qualified Data.ByteString.Lazy as BSL import qualified Streamly.External.ByteString as Strict import qualified Streamly.External.ByteString.Lazy as Lazy import System.IO (FilePath) strictByteStringSize :: BS.ByteString -> IO Int strictByteStringSize bs = S.length $ S.unfold Strict.read bs lazyByteStringSize :: BSL.ByteString -> IO Int lazyByteStringSize bsl = S.foldl' (+) 0 $ S.mapM strictByteStringSize $ S.map Strict.fromArray $ Lazy.toChunks bsl fileSize :: FilePath -> IO Int fileSize path = do bsl <- BSL.readFile path lazyByteStringSize bsl
Changelog for streamly-bytestring
- Fix memory bug in Strict.toArray
- Fix build with ghc-8.0.2 and ghc-7.10.3 (#6)
- Initial version released