Xcode 9 Autocomplete Not Working 100% - Partially Working
Try:
- Go to Xcode > Preferences > Text Editing
- Under Code completion - Uncheck 'Suggest completions while typing'
- Quit out of Xcode and then relaunch Xcode.
- Go to Xcode > Preferences > Text Editing again
- Quit out of Xcode and then relaunch Xcode.
- Now go to Code completion and check 'Suggest completions while typing'.
- Try typing library function or enum and enjoy!
Deleting the DERIVED DATA folder seemed to fix my issue. Thanks to this post: swift println() not showing autocomplete options while writting code