Objective-C Recipes

Classes in Objective-C need interface and implementation definitions. Although it’s not absolutely required, you typically keep the interface and implementations in separate files. The file with the interface is named as same as the class itself but with the .h file extension. The file with the implementation also has the class name but with the .m file extension. To use a custom class, you must import the class header file into the code file where you intend on using the class. Then you can instantiate an object from the class to use the functionality encapsulated in the class....