2010/6/10 Günther Schmidt <gue.schm...@web.de>:
> Hi everyone,
>
> I'm about to write a rather lengthy piece of IO code. Depending on the
> results of some of the IO actions I'd like the computation to stop right
> there and then.
What's wrong with a mere if/else condition?
foo = do
bar
x <- mu
case x of
Bar -> return ()
Mu -> do y <- zot
case y of
Zot -> return ()
Foo -> gud
foo = do
bar
x <- mu
y <- bar
when (pred x y) $ do
zot x
Continuations are risky for causing confusion of readers (and the
author herself), do you definitely need this?
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