⌘-T

Open new tab

Switch between tabs

Command-Enter

Show the Standard Editor

Option-Command-Enter

Show the Assistant Editor

Shift-Command-Y

Show the Debug Area

Option-click

Hold Option while clicking on a file in the Project navigator to open it in the Assistant Editor

Option-Shift-click

Hold Option and Shift while clicking on a file in the Project navigator to open it in a specific area in Xcode’s window. Use arrow keys and return key while doing that.

Switch between .h and .cpp files

Go back/forward

Command-Shift-O

Open Quickly. Quickly go to any file or symbol (e.g., function) by typing its name.

Command-L

Go to line number

Control-L

Scroll (vertically) to center selected line

Control-6

Jump to function in the current file

Command-click on symbol (e.g., variable or function)

Go to defintion

Command-/

Comment out current line or selected block of code

Command-\

Add or remove breakpoint on the current line

Command-Control-E

Edit all in scope

Control-I

Auto-indent selected text

Option-Command-[

Move line up

Option-Command-[

Move line down

Command-[

Indent left

Command-]

Indent right

Command/Option-Delete/Shift/←/→

Delete/select/move cursor quicker

Command-↑

Go to top of file

Command-↓

Go to bottom of file

Option-Command-←

Fold function/class

Option-Command-→

Unfold function/class

Command-R

Build and run

Command-B

Build

Control-Command-R

(Or click Run button while holding Control) Run without building

Command-,

Open preferences