Xcode Navigation
- cmd + shift + 2 - open organizer
- cmd + option + return - show assistant editor
- cmd + return - show standard editor (hide assistant editor)
- cmd + shift + o - quickly open or jump to a file
- cmd + ctrl + up/down - switch between header and implementation file
- cmd + ctrl + left/right - navigate to previous/next file
- cmd + click - jump to method declaration
- option + click - open quick documentation
Inline
- ctrl + spacebar (or escape) - show code completion suggestions
- ctrl + a + k + k - delete line
- cmd + ctrl + e - rename variable in scope
- cmd + f - open find bar
- cmd + option + f - open find & replace bar
- cmd + e - copy selection to find bar (without copying to clipboard)
- cmd + g - find next
- cmd + shift + g - find previous
- cmd + ] - indent
- cmd + [ - outdent
- cmd + / - comment/uncomment current line
Also, just stumbled across this great info graphic created by Robert Saunders.