Acme.Dont

Provides the indispensable don't command, ported from Perl. It is used exactly like the do monadic construct except that, instead of executing the block it controls, it... well... doesn't.

• For more information see influential documentation: http://search.cpan.org/~dconway/Acme-Don-t-1.01/t.pm

Usage:

main = don't $ do
    name <- getLine
    putStrLn $ "hello " ++ name

Documentation

don't :: Applicative f => f a -> f ()

Do not execute the argument.