Extract Refactoring#

Extract Function#

The extract function refactoring takes a selection of code, moves it into a separate function or method (or constant), and asks for a new function (or constant) name.

1. Select a portion of code.
2. Open Code Actions using a light bulb icon, or keyboard shortcut (by default Ctrl + . (Windows) or Cmd + .).
3. Select Extract function.
4. Enter a new function name and confirm with Enter.

Extract Constant#

If you select a constant expression, instead of Extract function, there will be Extract constant code action.

Extract Interface#

Available in v1.73 and newer.

The Extract Interface code action is provided on a class header, if there are public class members that can be placed into an interface.

The code action creates a new interface in a new file, with Interface suffix, adds public declarations from the class, copies it's documentary comments, and adds the interface to the selected class automatically.

See Also#

• Code Actions Overview
• Code Actions List