/**
1.^標識后表示block返回數(shù)值類型，()表示回傳參數(shù)
2.block都要用copy修飾，復(fù)制到堆上，防止釋放
*/

pragma mark - blcok作為屬性

/*<沒有返回值,沒有參數(shù)的block/
@property (nonatomic, copy) void(^myBlock1)(void);

/*<有返回值,沒有參數(shù)的block/
@property (nonatomic, copy) int(^myBlock2)(void);
@property (nonatomic,strong) NSArray<NSString *> *(^Array)(void);

/*<沒有返回值,有參數(shù)的block/
@property (nonatomic, copy) void(^myBlock3)(int);

/*<有返回值,有參數(shù)的block/
@property (nonatomic, copy) CGFloat (^myBlock4)(int, int);

+(void)showAlartViewType:(NSInteger )type WithcompletionHandler:(void(^)(void))sucess;

+(void)excuteInMainQueue:(void (^)(void))completionBlock;

+(void)excuteInMainQueue:(void (^)(void))completionBlock dely:(NSInteger )dely;

/*<NSString * block返回;NSInteger tag,completionHandle返回/
+(void)excuteInmainQueue:(NSString * (^) (NSInteger tag))completionHandle;