Control flow

In programming, control flow is the order in which your code executes. When working with Swift, we can use a variety of control statements. Loops, in particular, are useful for when you want to repeat a task multiple times. Let's take a look at a few different types of loop.

The for...in loop

One of the most common control statements is a for...in loop. It allows you to iterate over each element in a sequence. Let's see what a for...in loop looks like:

for <value> in <sequence> { 
 // Code here 
} 

We start the for...in loop with for, which is proceeded by <value>. <value> is a local constant (only the for...in loop can access it) and can be any name you like. Typically, you...