How to use NSPredicate with Date type

Question

I am trying to make NSPredicate based on a date... I have tried this:

let datePredicate = NSPredicate(format: "due_date < %@", Date())

I am not sure, but iirc, this worked before?

Now I get this error:

Argument type 'Date' does not conform to expected type 'CVarArg'

I tried smth like this

... Date() as NSDate, but that failed too.

How to solve this?

Answer 1

To use the current date as a predicate parameter just create an NSDate instance

let datePredicate = NSPredicate(format: "due_date < %@", NSDate())

For a date variable you can use

aDate as NSDate

or

aDate as CVarArg

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If you get the error

'Date?' is not convertible to 'NSDate'

then the code is not the real code because both Date() and NSDate() are non-optional.