Learning Swift™ Programming

Iterating Over Arrays

When you iterate over an array, you start at the beginning of the array and access each element of the array until you get to the end. Oftentimes you are looking for an element that meets a certain condition. Sometimes you will successfully find that element, and you will not need to iterate any further, so you will break the loop. The for-in loop is well suited for interating over arrays. Here’s what it looks like:

for animal in raining {    println(animal)}// cats// octopuses

Sometimes you need to access the current index for tracking purposes. For this purpose, Swift provides a global enumerate function, which gives you access to the current index and current element. Here’s how it works:

Click here to view code image ...