[Haskell-cafe] Re: Syntax question regarding 'import'

Achim Schneider barsoap at web.de
Tue Nov 4 08:52:49 EST 2008

Maur____cio <briqueabraque at yahoo.com> wrote:

> About this teste code:
> module Main (main) where {
> import Foreign hiding (unsafePerformIO,Foreign.Ptr,Data.Bits,) ;
> blo = xor 10 10 :: Int ;
> main = return ()
> }
You're only hiding the typeclass Data.Bits, not the function xor. To do
that, you have to write

import Foreign hiding (unsafePerformIO,Data.Bits(..))

Generally, I'd use 

import Foo(bar, Baz, Quux(..)) as F

(or even using "qualified") instead of using "hiding", it may be more
verbose but is way less confusing. Actually, I usually just write

import qualified Foo as F

and don't ever have to worry about name clashes.

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