NEW: Subscribe to Hacking with Swift+ and accelerate your learning! >>

Looping summary

You’ve made it to the end of the fourth part of this series, so let’s summarize:

  1. Loops let us repeat code until a condition is false.
  2. The most common loop is for, which assigns each item inside the loop to a temporary constant.
  3. If you don’t need the temporary constant that for loops give you, use an underscore instead so Swift can skip that work.
  4. There are while loops, which you provide with an explicit condition to check.
  5. Although they are similar to while loops, repeat loops always run the body of their loop at least once.
  6. You can exit a single loop using break, but if you have nested loops you need to use break followed by whatever label you placed before your outer loop.
  7. You can skip items in a loop using continue.
  8. Infinite loops don’t end until you ask them to, and are made using while true. Make sure you have a condition somewhere to end your infinite loops!
Hacking with Swift is sponsored by Instabug

SPONSORED Are you tired of wasting time debugging your Swift app? Instabug’s SDK is here to help you minimize debugging time by providing you with complete device details, network logs, and reproduction steps with every bug report. All data is attached automatically, and it only takes a line of code to setup. Start your free trial now and get 3 months off exclusively for the Hacking with Swift Community.

Start your free trial!

Sponsor Hacking with Swift and reach the world's largest Swift community!

BUY OUR BOOKS
Buy Pro Swift Buy Swift Design Patterns Buy Testing Swift Buy Hacking with iOS Buy Swift Coding Challenges Buy Swift on Sundays Volume One Buy Server-Side Swift (Vapor Edition) Buy Advanced iOS Volume One Buy Advanced iOS Volume Two Buy Advanced iOS Volume Three Buy Hacking with watchOS Buy Hacking with tvOS Buy Hacking with macOS Buy Dive Into SpriteKit Buy Swift in Sixty Seconds Buy Objective-C for Swift Developers Buy Server-Side Swift (Kitura Edition) Buy Beyond Code

Was this page useful? Let us know!

Average rating: 4.8/5

Link copied to your pasteboard.