การควบคุมลูปในบริบท switch

let n = 2
switch n {
case 1:
    print("one")
case 2:
    print("two")
    break
default:
    print("other")
}

let code = 0
switch code {
case 0:
    break // intentionally ignore
default:
    print("handled", code)
}
print("after switch")

for n in 1...4 {
    switch n {
    case 3:
        break // exits switch only
    default:
        print(n)
    }
}
print("loop finished")

loop: for n in 1...5 {
    switch n {
    case 3:
        break loop
    default:
        print(n)
    }
}
print("done")

for n in 1...5 {
    switch n {
    case let x where x % 2 == 0:
        continue
    default:
        print(n)
    }
}

for n in 1...3 {
    switch n {
    case 2:
        break
    default:
        print("value", n)
    }
}
print("all values processed")

let n = 1
switch n {
case 1:
    print("one")
    fallthrough
case 2:
    print("two")
default:
    print("done")
}

scan: for value in [10, 20, 30, 40] {
    switch value {
    case 30:
        break scan
    default:
        print(value)
    }
}

for n in 1...6 {
    switch n {
    case let x where x > 4:
        continue
    default:
        print(n)
    }
}

outer: for i in 1...3 {
    for j in 1...3 {
        switch j {
        case 2:
            break outer
        default:
            print(i, j)
        }
    }
}

main: for n in 1...5 {
    switch n {
    case 4:
        break main
    default:
        print(n)
    }
}

loop: for n in 1...4 {
    switch n {
    case 3: break loop
    default: print(n)
    }
}