2. Pop Symbols PopUp: Command+Option+2
By default this may have a different shortcut, maybe Ctrl+2. Pop-up the symbols then begin typing the method name you’re looking for. It’s a quick way to find a method in the current file.

3. Go to declaration/definition: Command+Double Click.
For example, double-clicking “NSString” takes you the NSString header.

4. Close All: Command+Option+W
This closes all windows of a similar type. Useful in the “Condensed” and “Default” layouts. For example, Option+Close on a source code window closes all source code windows. Option+Close on a debugger window closes all debugger windows.

5. Switch to Symbolic Counterpart: Command+Option+Shift+Up
This doesn’t have a keyboard shortcut by default, but it can be very handy.

When the cursor is in a method or function definition, this takes you to that method’s declaration, and vice versa, even if the declaration and definition are in the same file. E.g., for private interfaces declared in a .m file.

6. Compile: Command+K
Maybe obvious, but worth mentioning. This compiles only the current source file. It’s a quick way to check for syntax errors without doing a full build.

7. Next/Prev Build Warning: Command+=, Command+Shift+=
After a build, use this to iterate over any warnings and errors.

8. Strip Trailing Spaces (Scripts!)
I bet most people don’t realize how easy it is to create custom scripts in XCode.

Try this:
- Script Menu > Edit User Scripts…
- New Shell Script
- Input: Entire Document
- Output: Replace Document Contents
- Script:

#!/usr/bin/perl

while () {
s/\s+$//;
print “$_\n”;
}

Give it a name and a keyboard shortcut, and now you have keyboard shortcut for stripping trailing spaces from a document.

three finger swipe down will take you from the declaration/implementation of the method the cursor is currently in.

#6 alternative – Three finger swipe left and three finger swipe right will move you backwards/forwards through your editor history.