Re: How to XOR two integers?

shameem@cse.iitb.ac.in wrote:

Hi,

When I have the following program in a file test.hs:

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import Int

z = xor (intToInt32 0xf32e) (intToInt32 0xac43)

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The system gives the following error message:

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Reading file "test.hs": Dependency analysis ERROR test.hs:5 - Undefined variable "xor"

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However when I directly input the expression

Int> (xor (intToInt32 0xf32e) (intToInt32 0xac43))

I get the answer

24429

Since Int is imported in test.hs, and Int.hs exports Int32, shouldn't xor be visible in test.hs?

No. Int.hs exports Int32, but it does not export xor. You need to import Bits, as well as Int.