Subtract 7 days from current date

Question

It seems that I can\'t subtract 7 days from the current date. This is how i am doing it:

NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:N         


        

Answer 1

Swift operator extension:

extension Date {
    
    static func -(lhs: Date, rhs: Int) -> Date {
        return Calendar.current.date(byAdding: .day, value: -rhs, to: lhs)!
    }
}

Usage

let today = Date()
let yesterday = today - 7