ghc-knob

Memory-backed handles

Create memory-backed 'Handle's, referencing virtual files. This is mostly useful for testing 'Handle'-based APIs without having to interact with the filesystem. > import Data.ByteString (pack) > import Data.Knob > import System.IO > > main = do > knob <- newKnob (pack []) > h <- newFileHandle knob "test.txt" WriteMode > hPutStrLn h "Hello world!" > hClose h > bytes <- Data.Knob.getContents knob > putStrLn ("Wrote bytes: " ++ show bytes).

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