On Wed, Oct 20, 2021 at 11:02 AM Steven D'Aprano <st...@pearwood.info> wrote:
> Ironically, Ricky's in-fun suggestion that we use the tilde operator for
> swapcase was the only suggestion in these two threads that actually met
> the invariant for an inverse that ~~x == x.
>

>>> x = "ß"

:) Okay, so it's *mostly* an invariant.

ChrisA
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