> On Nov 5, 2017, at 3:14 AM, Dennis Weissmann <den...@dennisweissmann.me> 
> wrote:
> 
> Hi Charles,
> 
> You are right (the `default` case would not catch the deprecated values but 
> only new ones introduced in future releases), but the compiler doesn’t seem 
> to know that :(
> 
> But now that you say it, one approach could be to pattern match the raw 
> values (and, well, have a default clause, which I really want to avoid) 🤔
> 
> - Dennis
> 
> Sent from my iPhone

Hi Dennis,

What I am saying is that the new cases have the same raw values as the old 
ones. touchIDNotAvailable is -6; biometryNotAvailable is -6. touchIDNotEnrolled 
is -7; biometryNotEnrolled is -7. touchIDLockout it -8; biometryLockout is -8. 
They’re just aliases to each other, so if you handle one, you don’t have to 
handle the other. You can literally ignore the deprecated values and treat them 
as if they don’t exist. Try this code for yourself if you don’t believe me:

let err = LAError.touchIDLockout

switch err {
case LAError.biometryLockout:
        print("biometry lockout")
default:
        print("default")
}

This prints “biometry lockout”.

Charles

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