[Haskell-cafe] Class and Instance

[Daniel Schoepe]

On Fri, 10 Jun 2011 17:28:22 +0100, Patrick Browne <patrick.browne at dit.ie> wrote:
> -- Not OK
> -- insert 2 [9,2]

This causes an error, because numeric literals like 2 are polymorphic:

> :t 2
2 :: Num a => a

If you fix the type to Integer, it works as expected:

insert (2 :: Integer) [9,2]

By the way: It's helpful to include the error messages in your mail when
some piece of code doesn't compile.

Cheers,
Daniel
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