问题
I've just updated Xcode to version 6.3. I'm working on a project in Swift with some imported Objective C code. I also use Cocoapods.
I had the same issue with the Xcode 6.3 beta. I've seen and tried all other StackOverflow answers with no luck.
So far I've tried to:
Delete
~/Library/Developer/Xcode/DerivedDataand~/Library/Caches/com.apple.dt.Xcodewith Xcode and/or Mac restart.Uninstall Spotify.
Not use the "+" concatenation operator.
Set deployment's target to 8.1.
I should mention that Objective C code autocompletes fast and that before indexing Swift code too. Esc button for popup suggestions works with the same delay.
回答1:
Setting Whole Module Optimization to Yes is a workaround in my project.
In my case, the project has 5 modules, named here A, B, C, D and E, where the dependency is diagramed A -> B -> C -> D, and each of A to D refers E. With Xcode 6.3 and 6.3.1, it is fine to compile modules E and D, but it takes longer to compile C, and much longer to compile B and A, like 10 mins. After I change the project setting, it takes less than a min to compile all the modules. It looks faster than compilation with Xcode 6.2.
References:
- Slow test file compilation in Swift 1.2, Xcode 6.3.1
- https://devforums.apple.com/message/1128702#1128702
回答2:
Try to clear project Derived Data, after update.
Window - Projects - YourProject - Derived Data - Delete...
In my case code completion is working better after update.
回答3:
I used extensions on the GameScene Class and it sped everything up.
I took out three large functions from my gameScene Class, And made three separate extensions for them.
This is probably the easiest solution if none of the above work.
回答4:
This issue appears to be fixed in Xcode 6.3.1 (released yesterday).
来源：https://stackoverflow.com/questions/29579572/xcode-6-3-code-completion-too-slow