Xcode 9 Autocomplete Not Working properly

Question

auto compete is not working properly like when i try to type some function like print it is showing autocomplete which is not regular.it is happing in every function. it was working fine couple of days before and suddenly it stop showing that auto complete and show such type of autocompelete is there any solution

Answer 1

This happened to me as well. The answers in the suggested link in comments did not work for me.

Try toggling the "Target Memberships" in the right "File Inspector." This should work immediately without restart.