System.Unix.QIO

ePutStr

ePutStrLn

eMessage

eMessageLn

Get/set quietness levels

initialQuietness

quietness

Do task with modified quietness level

quieter

quieter'

Do a task if quietness < 1

qDo

Output to stderr when quietness < 1

qPutStr

qPutStrLn

qMessage

qMessageLn

Some idioms

q12

q02

v1

v3

v2

showQ