iOS單例宏

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////  Single.h//  FKLTest////  Created by kun on 16/8/11.//  Copyright © 2016年 kun. All rights reserved.//#ifndef Single_h#define Single_h#define SingelH(name) +(instancetype)share##name;#if __has_feature(objc_arc) // 條件編譯 ARC#define SingelM(name) static id share##name = nil;+ (instancetype)allocWithZone:(struct _NSZone *)zone{static dispatch_once_t onceToken;dispatch_once(&onceToken, ^{if ( !share##name ){share##name = [super allocWithZone:zone];}});return share##name;}+ (instancetype)share##name{return [[self alloc] init];}- (id)copyWithZone:(NSZone *)zone{return share##name;}- (id)mutableCopyWithZone:(NSZone *)zone{return share##name;}#else // 條件編譯 MRC#define SingelM(name) static id share##name = nil;+ (instancetype)allocWithZone:(struct _NSZone *)zone{static dispatch_once_t onceToken;dispatch_once(&onceToken, ^{if ( !share##name ){share##name = [super allocWithZone:zone];}});return share##name;}+ (instancetype)share##name{return [[self alloc] init];}- (id)copyWithZone:(NSZone *)zone{return share##name;}- (id)mutableCopyWithZone:(NSZone *)zone{return share##name;}- (oneway void)release{}- (instancetype)retain{    return shared##name;}- (NSUInteger)retainCount{    return MAXFLOAT;}#endif // 條件編譯#endif /* Single_h */

 

iOS單例宏