Fix-it is a feature built into Xcode that volunteers to correct coding mistakes for you. While it's not always perfect, it can save you time. See how Fix-it works in the video.
- [Instructor] Xcode provides warning…and error messages with additional suggestions to either fix…or optimize your code.…Let's take a look at how they work.…Consider this code that I have.…I created a variable rather than a constant,…and don't change it, and check its value later on.…When I do that, Xcode recognizes…that I don't change that value…and suggests that I should use a constant instead.…If you actually click the warning icon,…Xcode will suggest what to do…and give you a button to fix it for you.…
When I click Fix, var is then changed to let,…and the warning message goes away.…Let's take a look at a different example,…and I'm going to datatype this constant…to be a Boolean that is optional.…When I do that, Xcode automatically notices…that when I'm checking the value,…it's not a true or false value,…I'm checking the value of the optional.…So here it says the value…of optional type Bool must be unwrapped to a value…of type Bool, so we can click this…and get a couple of suggestions.…
Note that sometimes these suggestions are…
- Installing Xcode
- Creating your first project
- Editing code
- Creating snippets
- Prototyping in playgrounds
- Implementing version control with Git
- Building and connecting the interface
- Compiling and debugging apps in Xcode
- Creating workspaces for sharing resources and code
Skill Level Beginner
1. Getting Started
2. Edit Code
3. Source Control
4. Interface Builder Basics
5. Compile and Debug
Create a workspace2m 51s
Next steps1m 5s
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