[Haskell-cafe] Text: find

On Sun, Oct 17, 2010 at 3:25 PM, Bryan O'Sullivan wrote:

On Mon, Oct 11, 2010 at 1:12 PM, Malcolm Wallace wrote:

...

 find        find      find           (Text -> Bool) -> Text -> Maybe Text

Proposal: rename Text.findBy to Text.find.

I agree with the change of type, not so much with the naming. That's roughly my stance in the other cases, too.

What would the definition of a function of the form:

find :: (Text -> Bool) -> Text -> Maybe Text

look like? What sort of requirements would be placed on the input predicate? Maybe I have a failure of imagination, but that sounds like a tricky thing to get correct for all predicates. Antoine