8.7 Fallthrough

Those familiar with switch statements in other languages such as C and Objective-C will notice that it is no longer necessary to include a break statement after each case declaration. Unlike other languages, Swift automatically breaks out of the statement when a matching case condition is met. The fallthrough effect of other switch implementations (whereby the execution path continues through the remaining case statements) can be emulated using the fallthrough statement:

let temperature = 10

 

switch (temperature)

{

      case 0...49 where temperature % 2 == 0:

        print("Cold and even")

        fallthrough

 

      case 50...79 where temperature % 2 == 0:

        print("Warm and even")

      &...