[Haskell-cafe] I think I discovered my first Monoid instance

Henning Thielemann lemming at henning-thielemann.de
Tue Sep 29 09:50:53 UTC 2020

On Tue, 29 Sep 2020, Andrew Butterfield wrote:

> Not only that, `xor` has inverses so it forms an abelian group

... and it's no surprise since 'xor' is '+' in ℤ₂.

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