Understanding about xcode refactoring options

Understanding about xcode refactoring options

Rename: Rename the identifier to ensure better code readability. The identifier includes the name of a class, method, or function.

Extract: Extract the code you selected in XCode to a new method or function.

Create SuperClass: defines the parent class for the currently selected class in Xcode

Move Up: Move the selected method, attribute, or instance variable from a class to its parent class. Both the subclass and parent classes are defined in the project.

Move Down: opposite to Move up, it moves the selected Identifier from the parent class to the subclass. Both the parent class and the subclass are defined in the project.

Encapsulate: Encapsulate an instance variable and create an appropriate Accessor for it

Convert to Objective-c arc (converted to oc arc): a tool used to Convert old projects so that they can apply automatic reference counting.

Convert to Modern Objective-C Syntax (converted to the new OC Syntax): a tool to replace code with the new OC feature.