Objective-C:Constants

• YES
• NO
• nil
• Nil
• OBJC_OLD_DISPATCH_PROTOTYPES
• OBJC_ROOT_CLASS
• NS_VALID_UNTIL_END_OF_SCOPE
• OBJC_ASSOCIATION_ASSIGN
• OBJC_ASSOCIATION_RETAIN_NONATOMIC
• OBJC_ASSOCIATION_COPY_NONATOMIC
• OBJC_ASSOCIATION_RETAIN
• OBJC_ASSOCIATION_COPY

/* YES */

#define YES (BOOL)1

/* NO */

#define NO (BOOL)0

/* nil */

#define nil __DARWIN_NULL

/* Nil */

#define Nil __DARWIN_NULL

/* OBJC_OLD_DISPATCH_PROTOTYPES */

#define OBJC_OLD_DISPATCH_PROTOTYPES 1

/* OBJC_ROOT_CLASS */

#define OBJC_ROOT_CLASS

/* NS_VALID_UNTIL_END_OF_SCOPE */

#define NS_VALID_UNTIL_END_OF_SCOPE

/* OBJC_ASSOCIATION_ASSIGN */

/* OBJC_ASSOCIATION_RETAIN_NONATOMIC */

/* OBJC_ASSOCIATION_COPY_NONATOMIC */

/* OBJC_ASSOCIATION_RETAIN */

/* OBJC_ASSOCIATION_COPY */

enum {

    OBJC_ASSOCIATION_ASSIGN = 0,

    OBJC_ASSOCIATION_RETAIN_NONATOMIC = 1,

    OBJC_ASSOCIATION_COPY_NONATOMIC = 3,

    OBJC_ASSOCIATION_RETAIN = 01401,

    OBJC_ASSOCIATION_COPY = 01403

};