C#•9mo ago

✅ Disjunctive patterns negation

Hey there. I was wondering why my disjunctive is not working as intended:

authUser.Level
> Internal
authUser.Level is UserLevel.Administrator
> false
authUser.Level is UserLevel.Internal
> true
authUser.Level is not UserLevel.Administrator or UserLevel.Internal
> true

authUser.Level
> Internal
authUser.Level is UserLevel.Administrator
> false
authUser.Level is UserLevel.Internal
> true
authUser.Level is not UserLevel.Administrator or UserLevel.Internal
> true

The last expression result doesn't make sense for me, because I'm checking if authUser.Level is not Administrator or Internal, and it actually is Internal as shown in the first expression, so the result should be false. What i'm doing wrong?

10 Replies

Keswiik•9mo ago

probably need to use parenthesis around your or for the not to function as expected

cypherpotatoOP•9mo ago

https://dotnetfiddle.net/CG4qNG working example

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cypherpotatoOP•9mo ago

but why putting an parenthesis on it? does (UserLevel.Administrator or UserLevel.Internal) produces an enum with equality to both values or am i missing something else?

Keswiik•9mo ago

Because your example shows that it is clearly matching against not UserLevel.Administrator and UserLevel.Internal

cypherpotatoOP•9mo ago

so the ideal, without the parenthesis, would be authUser.Level is not UserLevel.Internal and not UserLevel.Administrator?

Keswiik•9mo ago

correct

cypherpotatoOP•9mo ago

pretty confusing but that's it, thank you

Keswiik•9mo ago

:PepoSalute: