ghci :info should show fixity of operator that is lacking a fixity declaration
While discussing a syntax question, I wanted to say "you first look up all the fixity information" but then I got:
Prelude> :i ($)
($) :: (a -> b) -> a -> b -- Defined in ‘GHC.Base’
infixr 0 $
Prelude> foo # bar = undefined
Prelude> :i (#)
(#) :: p1 -> p2 -> a -- Defined at <interactive>:1:5
So what fixity does #
have? Of course, every-one knows it's infixl 9
(https://www.haskell.org/onlinereport/haskell2010/haskellch4.html#x10-820004.4.2) (NB: and it's easy to find, too - just scroll down to the very end of https://www.haskell.org/documentation/ because that's obviously where the most important documents are)
Well anyway, could ghci
perhaps print a line
-- lacking a fixity declaration, assumed to be infixl 9
or
infixl 9 # -- assumed, since a fixity declaration is lacking
where I'm trying to use language of the standard verbally.