convert to swift 4 fails

Hi
Trying yo convert to current swift:

After using 'Minimize Inference' you need to follow the manual steps detailed in the migration guide to complete the conversion.

the guide does not tell me where to put those @obj.
Any idea?


It doe not pass the screen saying "Manual steps necessary"

Replies

You should set Build settings

with Swift 3 @objC inference to Off


So, you will get an error each time you have an implicit @ObjC


Then just add it in the func definition.