Make the Suggestions More Useful and Accurate

Both Copilot for Xcode and Codeium can use the opened tabs to generate suggestions. If you want the suggestions to be more useful, you can open tabs that are relevant to the file you are editing.

Codeium has a code search feature that works without opening other tabs.

It's also known that both GitHub Copilot and Codeium are using Tree Sitter to utilize AST to generate better suggestions. But there is no Swift or Objective-C Tree Sitter support in GitHub Copilot.