NEW! Master Swift design patterns with my latest book! >>

What are breakpoints?

Paul Hudson       @twostraws

Breakpoints are locations in your code where Xcode will pause so that you can inspect the state of your program. They don’t have any impact on the final performance of your code – in fact, they don’t even exist in your code at all – so there’s no harm using them liberally.

To place a breakpoint, click to the left of a line of code you want to pause on – in the gutter, where the line numbers are visible if you use them. If you prefer keyboard shorts, press Cmd+. When you run your program now, Xcode will pause as soon as that line is reached.

To remove a breakpoint, either press Cmd+\ on it again, or drag it off the gutter.

Available from iOS 7.0 – see Hacking with Swift tutorial 18

Did this solution work for you? Please pass it on!

Other people are reading…

About the Swift Knowledge Base

This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.

Upgrade to premium

The Hacking with Swift guide book helps you learn faster, plus get an Xcode tips and tricks video and Swift wall chart.

MASTER SWIFT NOW
Buy Practical iOS 12 Buy Pro Swift Buy Swift Design Patterns Buy Practical iOS 11 Buy Swift Coding Challenges Buy Server-Side Swift (Vapor Edition) Buy Server-Side Swift (Kitura Edition) Buy Hacking with macOS Buy Advanced iOS Volume One Buy Hacking with watchOS Buy Hacking with tvOS Buy Hacking with Swift Buy Dive Into SpriteKit Buy Swift in Sixty Seconds Buy Objective-C for Swift Developers Buy Beyond Code

Was this page useful? Let me know!

Click here to visit the Hacking with Swift store >>