Updated to Xcode 9.3
This is the quick guide for all the Xcode Keyboard Shortcuts:
Comment/ Un-comment code: ^ + /
Undo: ⌘ + Z
Redo: ⌘ + ⇧ + Z
Shift Right or Left: ⌘ + [ | ]
Indent: ⌃ + I
Navigate to the beginning or end of line: ⌘ + ← | →
Navigate word by word left or right of line: ⌥ + ← | →
Bring up possible auto-completion choices: esc
Jump To definition: ⌘ + Click
Put a breakpoint to a line: ⌘ + \
Move line up or down: ⌘ + ⌥ + [ | ]
Find in File: ⌘ + F
Find & Replace in File: ⌘ + ⌥ + F
Find in Project: ⌘ + ⇧ + F
Find & Replace in Project: ⌘ + ⌥ + ⇧ + F
New Tab: ⌘ + T
Next Tab: ⌘ + ⇧ + {
Previous Tab: ⌘ + ⇧ + }
Open Quickly: ⌘ + ⇧ + O
Move Focus to Editor: ⌘ + J
Navigate to Next File in Recently Visited: ⌘ + ⌃ + →
Navigate to Previous File in Recently Visited: ⌘ + ⌃ + ←
Show present file in Editor: ⌘ + ⇧ + J
Fold/ Unfold code: ⌘ + ⌥ + ← | →
Fold/ Unfold all methods/functions: ⌘ + ⌥ + ⇧ + ← | →
Fold/ Unfold all multiple line comments: ⌃ + ⇧ + ⌘ + ← | →
Font Size Increase/Decrease: ⌘ + + | -
Go to line number: ⌘ + L
Show Assistant Editor: ⌘ + ⌥ + Return
Hide Assistant Editor: ⌘ + ↩
Toggle Completions: ⌃ + Space
Edit All in Scope: ⌘ + ⌃ + E
Show / Hide Navigator: ⌘ + 0
Switch Tabs: ⌘ + 1 - 8
When clicking a File in Navigator open in
Assistant Editor: ⌥ + Click
Toggle Debug Area: ⌘ + ⇧ + Y
Next Issue: ⌘ + ’
Previous Issue: ⌘ + ”
Toggle Breakpoints: ⌘ + Y
Clear Console: ⌘ + K
Show / Hide Utilities: ⌘ + ⌥ + 0
Switch Tabs Utilities: ⌘ + ⌥ + 1 - 9
Build: ⌘ + B
Run: ⌘ + R
Stop: ⌘ + .
Analyze: ⌘ + ⇧ + B
Test: ⌘ + U
Clean: ⌘ + ⇧ + K
Help for Clicked Symbol: ⌥ + click
Documentation for clicked Symbol: ⌥ + Double click
Show Documentation: ⌘ + ⇧ + 0
Documentation for Selection: ⌘ + ⌥ + ⌃ + /
Move Focus to Filter in Navigator: ⌘ + ⌥ + J
Move Focus to Filter in Utilities: ⌘ + ⌥ + L
