Some of the most useful “Power Xcode Tricks” from the try! Swift World online workshop by @ericasadun

Search Scope

Create custom scopes
You can create custom search scope to limit your search within a subset of your code. For instance, create a scope to search only within your small team's scope.
Exclude certain files ⭐️
Xcode doesn't provide out-of-the-box filter functionality for this. But you can use regex to exclude certain files to create useful search scopes. For example, you can exclude test files from your search.
Other handy search scopes
Tests Only, Swift Only, Objective-C Only, headers, etc.
Search history
Related items

Navigation Pane

Find files with keyword
Find files with keyword X or Y
Wildcard
Recenty opened files
Modified file
Open sibling folders ⭐️
This functionality applies to everywhere with the similar triangle (e.g. Find tab in Navigator Pane, etc)

Open subfolders ⭐️
This functionality applies to everywhere with the similar triangle (e.g. Find tab in Navigator Pane, etc)

Others

File history
Reveal in Project Navigator ⭐️
Edit all in scope