swift - sort an array of objects by their optional boolean property without force unwrapping

Question

I can sort this array of store objects by their \'flagship\' boolean property, but how can I safely unwrap the \'flagship\' property first?

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Answer 1

How about:

$0.flagship == true && $1.flagship != true

The left side will succeed if the value is not nil and is true, the right side will succeed if the value is either nil or false.