hPutStr package:string-class

hPutStr :: StringRWIO s => Handle -> s -> IO ()
string-class Data.String.Class
Write a string to a handle
hPutStrLn :: StringRWIO s => Handle -> s -> IO ()
string-class Data.String.Class
Write a string to a handle, followed by a newline N.B.: implementations might not define this atomically. If the state of being atomic is necessary, one possible solution is to convert a string to an efficient type for which hPutStrLn is atomic.