Swift version: 5.6
Xcode has a few special breakpoint types, accessed by going to the breakpoint navigator (Cmd+8) then clicking + in the bottom-left corner. One of the options in that menu is Swift Error Breakpoint, and it allows Xcode to pause when Swift errors are thrown.
Swift error breakpoints are different from catching errors normally – in fact, the two complement each other nicely. If you’re calling someone else’s code (e.g. Apple’s) and that code throws an error, a Swift error breakpoint won’t halt on that. Instead, it will halt on errors thrown by your own code, i.e. wherever you use a
Swift error breakpoints are helpful because of the way Swift errors propagate – sometimes an error might be throw five methods deep in your code, then bubble upwards and upwards until they get handled. Once you enable the error breakpoint, Swift will pause where the error is thrown, so you don’t need to dig through your code.
SAVE 50% To celebrate Black Friday, all our books and bundles are half price, so you can take your Swift knowledge further without spending big! Get the Swift Power Pack to build your iOS career faster, get the Swift Platform Pack to builds apps for macOS, watchOS, and beyond, or get the Swift Plus Pack to learn advanced design patterns, testing skills, and more.
Available from iOS
This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.
Link copied to your pasteboard.