A Collection of Code Snippets in as Many Programming Languages as Possible
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Welcome to the File Input Output in Haskell page! Here, you’ll find the source code for this program as well as a description of how the program works.
module Main where
import System.IO
main :: IO ()
main = do
-- write
handle <- openFile "output.txt" ReadWriteMode
hPutStr handle "file contents"
hClose handle
-- read
handle <- openFile "output.txt" ReadWriteMode
value <- hGetContents handle
-- Print the contents of the file that was read.
-- Haskell reads the file lazily, so the value must be printed before the handle is closed
putStrLn value
hClose handle
File Input Output in Haskell was written by:
If you see anything you’d like to change or update, please consider contributing.
Note: The solution shown above is the current solution in the Sample Programs repository as of Oct 24 2018 10:42:45. The solution was first committed on Oct 22 2018 09:07:26. As a result, documentation below may be outdated.
No ‘How to Implement the Solution’ section available. Please consider contributing.
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