hPutStr -package:ghc-internal

Computation hPutStr hdl s writes the string s to the file or channel managed by hdl. Note that hPutStr is not concurrency safe unless the BufferMode of hdl is set to LineBuffering or BlockBuffering:

>>> let f = forkIO . hPutStr stdout

>>> in do hSetBuffering stdout NoBuffering; f "This is a longer string"; f ":D"; f "Hello Haskell"; pure ()
This: HDiesl lao  lHoansgkeerl lstring

>>> let f = forkIO . hPutStr stdout

>>> in do hSetBuffering stdout LineBuffering; f "This is a longer string"; f ":D"; f "Hello Haskell"; pure ()
This is a longer string:DHello Haskell

This operation may fail with:

• isFullError if the device is full.
• isPermissionError if another system resource limit would be exceeded.

A synonym for hPut, for compatibility

Write a string to a handle.

Lifted hPutStr

Lifted hPutStr

Computation hPutStr hdl s writes the string s to the file or channel managed by hdl. This operation may fail with:

• isFullError if the device is full; or
• isPermissionError if another system resource limit would be exceeded.

Writing entire data.

Write a string like value a to a supplied Handle.

Like the normal hPutStr, but encodes the output using an encoding.

Write a string to a handle

The same as hPutStr, but adds a newline character. This operation may fail with the same errors, and has the same issues with concurrency, as hPutStr!

Write a ByteString to a handle, appending a newline byte. Unlike hPutStr, this is not atomic: other threads might write to the handle between writing of the bytestring and the newline.

Write a ByteString to a handle, appending a newline byte. The chunks will be written one at a time, followed by a newline. Other threads might write to the Handle in between, and hence hPutStrLn alone is not suitable for concurrent writes.

Write a string to a handle, followed by a newline.

Print a Stream Char.

Given a list of strings, output a line containing each item, adding newlines as appropriate. The list is not expected to have newlines already.

The same as hPutStr, but adds a newline character.