Hi David, You're right, I keep forgetting to look at the source code.
And I wasn't aware of the info (:i) command. Should come in handy in the future. Michael --- On Mon, 9/6/10, David Menendez <d...@zednenem.com> wrote: From: David Menendez <d...@zednenem.com> Subject: Re: [Haskell-cafe] Operator precedence To: "michael rice" <nowg...@yahoo.com> Cc: haskell-cafe@haskell.org, "Daniel Díaz" <lazy.dd...@gmail.com> Date: Monday, September 6, 2010, 1:50 PM On Mon, Sep 6, 2010 at 1:37 PM, michael rice <nowg...@yahoo.com> wrote: > > A "concrete" library? > > I'm playing around with Data.Bits. It has .&. and .|. which I assume are > functions > (rather than operators) because I don't see and infix statement for them. > Correct? .|. and .&. are operators because they are made from symbol characters. Operators default to infixl 9 unless specified otherwise, so no infix declaration is needed. However, Data.Bits does have infix declarations for .&. and .|. : infixl 8 `shift`, `rotate`, `shiftL`, `shiftR`, `rotateL`, `rotateR` infixl 7 .&. infixl 6 `xor` infixl 5 .|. If you want to check the fixity of an operator, use :info in GHCi. Prelude Data.Bits> :i .|. class (Num a) => Bits a where ... (.|.) :: a -> a -> a ... -- Defined in Data.Bits infixl 5 .|. -- Dave Menendez <d...@zednenem.com> <http://www.eyrie.org/~zednenem/>
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