Code refactoring
Refactoring is a process of improving your source code without creating a new functionality. Refactoring helps you keep your code solid, dry, and easy to maintain.
Invoke refactoring
Select an item to refactor. You can select a file/folder in the Project tool window or expression/symbol in the editor.
Press ⌃⌥⇧T to open a list of refactorings that can be selected.
Alternatively, you can use a keyboard shortcut for a specific refactoring.
If you need to undo your refactoring, press ⌃Z.
Preview refactoring changes
For some refactorings, AppCode lets you preview changes before applying them.
Invoke refactoring by pressing ⌃⌥⇧T and select a desired refactoring from the list.
To see potential changes (the list of usages where the refactoring will be performed), click Preview in the dialog.
Check the changes that are going to be made in the Find tool window tool window. You can exclude ⌦ or remove ⌃X changes that you consider unnecessary.
Click Do Refactor to proceed with the changes.
Resolve conflicts
When AppCode encounters problems with your refactoring, it opens a dialog with the list of conflicts and their brief descriptions.
Click Continue to ignore the problem and proceed to open the preview in the Find tool window.
Click Show Conflicts in View to open the conflict entries in the Find tool window and deal with them further.
For example, you can try to exclude an entry from refactoring by pressing ⌦ or click Cancel and return to the editor.
Configure refactoring settings
In the Preferences dialog ⌃⌥S, select .
On the Code Editing page, in the Refactorings section, adjust the refactoring options and click OK.
The most popular refactorings supported in AppCode
| Rename refactorings | ⇧F6 | Renames an element and its usages. |
| Change signature | ⌃F6 | Changes the signature of a method. |
| Move and copy | F6/ F5 | Moves/copies an element. |
| Safe delete | ⌥⌦ | Makes sure that you do not delete files referenced in your source code. |
| Extract method | ⌃⌥M | Extracts code fragments into methods and helps you reduce code duplication. |
| Extract constant | ⌃⌥C | Declares a new constant and initializes it with the selected expression. |
| Extract parameter | ⌃⌥P | Adds a new parameter to a method declaration and updates the method calls accordingly. |
| Extract variable | ⌃⌥V | Declares a new variable and initializes it with the selected expression. |
| Inline | ⌃⌥N | Inlines an element. Acts as opposite of extracting. |