2014.12.10 OC Basics Review

1. OC is a non-garbage-collected language that requires manual management of memory without opening the arc

2. @ is the beginning of the keyword and the beginning of the string

3. @interface ... @end write a declaration of a class, including a declaration of member variables and methods, @implementaion ... @end write a method implementation of a class, such as a Method-(void) setage:int; The + sign represents a static method, and the-number represents a dynamic method

4. The declaration initialization of an object is Student *st = [[Student alloc]init]; The St pointer represents the object

5. St.age is not an Access member variable, but instead calls the get and set methods according to the situation, generally declaring member variables should be preceded by an underscore, such as _age;
   

2014.12.10 OC Basics Review