कई defer ब्लॉक का क्रम

func resources() {
    print("open A")
    defer { print("close A") }
    print("open B")
    defer { print("close B") }
    print("use both")
}
resources()

func stack() {
    defer { print("pop first-declared last") }
    defer { print("pop last-declared first") }
    print("push done")
}
stack()

func state() {
    var x = 1
    defer { print("x is", x) }
    x = 42
}
state()

for i in 1...2 {
    defer { print("late", i) }
    defer { print("early", i) }
    print("body", i)
}

func nested() {
    defer { print("outer defer") }
    do {
        defer { print("inner defer") }
        print("inner body")
    }
    print("outer body")
}
nested()

func files() {
    print("open log")
    defer { print("flush log") }
    print("open db")
    defer { print("disconnect db") }
    print("transaction")
}
files()

func quiz() {
    defer { print("one") }
    defer { print("two") }
    print("body runs first")
}
quiz()

func early(_ skip: Bool) {
    defer { print("cleanup 1") }
    defer { print("cleanup 2") }
    if skip { return }
    print("full body")
}
early(true)

func pattern() {
    print("acquire 1")
    defer { print("release 1") }
    print("acquire 2")
    defer { print("release 2") }
    print("work")
}
pattern()

func demo() {
    defer { print("1") }
    defer { print("2") }
    print("body")
}
demo()