"if not" condition check (for data validation)

[Patrick Schluter]

On Thursday, 18 June 2020 at 13:58:33 UTC, Dukc wrote:
> On Thursday, 18 June 2020 at 13:57:39 UTC, Dukc wrote:
>> if (not!(abra && cadabra)) ...
> if (not(abra && cadabra)) ...

Which is a quite a complicated way to write

if (!(abra && cadabra)) ...