ANNOUNCE: yap-0.0 - yet another prelude

wren ng thornton wren at
Thu Aug 11 21:43:22 CEST 2011

On 8/10/11 9:53 AM, Paterson, Ross wrote:
> Yet another restructuring of the Prelude numeric classes on algebraic lines, proposed for a revision of the Haskell Prelude:

Very nice in its simplicity, but it suffers from the same problem as all 
the other attempts I've seen. Namely it ignores the importance of 
semirings and runs headlong towards fields and beyond. The {(-), abs, 
signum, negate} methods really must be broken out from (+).

Live well,

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