Xcode 8.2 Code Completion Not Working

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Update:
As per @Dareon solution below also works for Xcode Version 8.3 (8E162) and 8.3.2 (8E2002). Thanks, @Dareon for the confirmation. 🙂

I was facing the same issue and following worked for me.

I am using Xcode Version 8.2.1 (8C1002).

  1. Go to Xcode > Preferences > Text Editing
  2. Under Code completion – Uncheck ‘Suggest completions while typing’
  3. Quit out of Xcode and then relaunch Xcode.
  4. Go to Xcode > Preferences > Text Editing again
  5. Quit out of Xcode and then relaunch Xcode.
  6. Now go to Code completion and check ‘Suggest completions while typing’.
  7. Try typing library function or enum and enjoy!

At least, it worked for me.

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