Duplicate / Remove current line or selection in Xcode
####To install pre-compiled plugin:
- Download XcodeKit.xcplugin.zip (old version)
- Unzip and put it into your ~/Library/Application Support/Developer/Shared/Xcode/Plug-ins/
- Restart Xcode and you should see to new menu items in Edit menu:
Delete Selection / Line and Duplicate Selection / Line
You can add shortcuts to these commands from System Preferences -> Keyboard -> Shortcuts -> App Shortcuts...