[Haskell-cafe] naturally, length :: a -> Int

[Zemyla]

You're looking for Ratio Natural.

On Wed, Mar 3, 2021, 09:20 Olaf Klinke <olf at aatal-apotheke.de> wrote:

> While we're at it: Can there be a Fractional type permitting only
> positive numbers, as the positive real numbers are closed under
> division?
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.haskell.org/pipermail/haskell-cafe/attachments/20210305/4f5ec23f/attachment.html>