generalization of maybeToList
shawjef3 at msu.edu
Tue Feb 14 16:47:46 CET 2012
I'm all for generalizations! I have a second, very similar function I
think should be added, but I don't have a good name for it.
maybe mzero id :: MonadPlus m => Maybe (m a) -> m a
Perhaps there is once again an equivalent for Alternative.
On 2/14/2012 10:24 AM, Edward Kmett wrote:
> If you are going to add one then the generalization of your generalization to Alternative might be better.
> maybeA = maybe empty pure
> On Feb 14, 2012, at 9:55 AM, Jeff Shaw<shawjef3 at msu.edu> wrote:
>> I find myself using this function quite a lot. I believe it should be included in Data.Maybe.
>> import Control.Monad
>> maybeTo :: (MonadPlus m) => Maybe a -> m a
>> maybeTo =
>> maybe mzero return
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