| Copyright | Copyright (C) 2007 John Goerzen |
|---|---|
| License | BSD3 |
| Maintainer | John Lato <jwlato@gmail.com> |
| Stability | provisional |
| Portability | portable |
| Safe Haskell | Safe |
| Language | Haskell98 |
Data.ListLike.IO
Description
String-like functions
Written by John Goerzen, jgoerzen@complete.org
- class ListLike full item => ListLikeIO full item | full -> item where
Documentation
class ListLike full item => ListLikeIO full item | full -> item where Source #
An extension to ListLike for those data types that support
I/O. These functions mirror those in System.IO for the most part. They
also share the same names; see the comments in Data.ListLike for help
importing them.
Note that some types may not be capable of lazy reading or writing. Therefore, the usual semantics of System.IO functions regarding laziness may or may not be available from a particular implementation.
Minimal complete definition:
- hGetLine
- hGetContents
- hGet
- hGetNonBlocking
- hPutStr
Minimal complete definition
Methods
hGetLine :: Handle -> IO full Source #
Reads a line from the specified handle
hGetContents :: Handle -> IO full Source #
Read entire handle contents. May be done lazily like
hGetContents.
hGet :: Handle -> Int -> IO full Source #
Read specified number of bytes. See hGet for
particular semantics.
hGetNonBlocking :: Handle -> Int -> IO full Source #
Non-blocking read. See hGetNonBlocking for more.
hPutStr :: Handle -> full -> IO () Source #
Writing entire data.
hPutStrLn :: Handle -> full -> IO () Source #
Write data plus newline character.
Read one line
getContents :: IO full Source #
Read entire content from stdin. See hGetContents.
putStr :: full -> IO () Source #
Write data to stdout.
putStrLn :: full -> IO () Source #
Write data plus newline character to stdout.
interact :: (full -> full) -> IO () Source #
Interact with stdin and stdout by using a function to transform
input to output. May be lazy. See interact for more.
readFile :: FilePath -> IO full Source #
Read file. May be lazy.
writeFile :: FilePath -> full -> IO () Source #
Write data to file.
appendFile :: FilePath -> full -> IO () Source #
Append data to file.
Instances