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ndmitchell / hoogle

Haskell API search engine
http://hoogle.haskell.org/
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Doesn't find Data.Functor.(<&>), the `flip fmap` #258

Closed ulidtko closed 6 years ago

ulidtko commented 6 years ago

Steps to reproduce:

  1. Go to https://www.haskell.org/hoogle
  2. Punch in the type signature Functor f => f a -> (a -> b) -> f b

So, perhaps obviously, I'm trying to dig up the spelling of the operator (<&>) from base by hoogling the signature I know it should have.

Somehow though, it's nowhere near the first page of results. How come?..

ndmitchell commented 6 years ago

See https://github.com/ndmitchell/hoogle/blob/master/README.md#hoogle-4-vs-hoogle-5 - basically <&> got added after the Hoogle 4 search engine, but it's in Hoogle 5 at https://hoogle.haskell.org/?hoogle=Functor%20f%20%3D%3E%20f%20a%20-%3E%20(a%20-%3E%20b)%20-%3E%20f%20b (although not as high as I would have hoped).

ulidtko commented 6 years ago

Ah, yes, that makes sense. I think I'd even stumbled over this before. Will try to remember to go to https://hoogle.haskell.org instead of https://haskell.org/hoogle !