[PATCH 3/3] Put nand, nor, nany and nall in Prelude

[Edward Kmett]

and and or have been exposed in the Prelude for 22+ years. They were in by
Haskell 1.2 from 1992 at latest, and where possibly around earlier.

Any pain they cause is *long* since over.

Adding nand and nor for trivial compositions causes fresh pain for anyone
already using those names ... to save 3 characters.

-Edward


On Thu, Feb 27, 2014 at 10:13 AM, Alexander Berntsen
<alexander at plaimi.net>wrote:

> Again, if 'and' and 'or' are exposed without it being a problem, 'nand'
> and 'nor' could be too without causing a dramatic namespace pollution.
> ---
>  Prelude.hs | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/Prelude.hs b/Prelude.hs
> index 6be7846..79e3868 100644
> --- a/Prelude.hs
> +++ b/Prelude.hs
> @@ -83,7 +83,7 @@ module Prelude (
>      -- ** Reducing lists (folds)
>      foldl, foldl1, foldr, foldr1,
>      -- *** Special folds
> -    and, or, any, all,
> +    and, or, nand, nor, any, all, nany, nall,
>      sum, product,
>      concat, concatMap,
>      maximum, minimum,
> --
> 1.8.3.2
>
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