Class methods and Object methods

Defined:

+ (void) class name: (int) NUM1 and class name: (int// class method -(void) class name: (  int) NUM1 and class name: (int// object Method

Use:

The class method can have the same name as the instance method, does not affect the use, the instance method is called by the instance object access, and the class method accesses the call through the class without cross-interaction.

// class Method [class name Method name]{} // Object Methods [Object Name Method name]{}

New ]; // calling its object method from a CA1 object float result = [CA1 add: andNum2: +]; // calling the class method through the class name result = [Calculator add: andNum2:ten]; NSlog (@ "result =%0.2f", result);

Class methods and Object methods