[Haskell-cafe] Question on a common pattern
barsoap at web.de
Tue Mar 15 13:27:08 CET 2011
tsuraan <tsuraan at gmail.com> wrote:
> Is there a more concise way to do this?
someIO >>= f where
f Opt1 = ...
If it's a common pattern, you can even do
opts f _ _ (Opt1 x) = f x
opts _ g _ (Opt2 x) = g x
opts _ _ h (Opt3 x) = h x
. Functions are easier to mess around with than case expressions.
(c) this sig last receiving data processing entity. Inspect headers
for copyright history. All rights reserved. Copying, hiring, renting,
performance and/or quoting of this signature prohibited.
More information about the Haskell-Cafe