Control flow, also known as flow of control, refers to the order in which statements, instructions, or functions are executed within an application. Swift supports all of the familiar control flow statements that are in C-like languages. These include loops (including for
and while
), conditional statements (including if
and switch
) and the transfer of the control statements (including break
and continue
). It is worthwhile to note that Swift 3 does not include the traditional C for
loop; rather than the traditional do…while
loop Swift has the repeat…while
loop.
In addition to the standard C control flow statements, Swift has also added additional statements, such as the for...in
loop, and enhanced some of the existing statements, such as the switch
statement.
Let's begin by looking at conditional statements in Swift.