iOS Block属性

#import "ViewController.h"
#import "Person.h"

@interface ViewController ()
/**  */
@property(strong ,nonatomic)Person * p;
@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    //1.block作为对象的属性!!
    //2.block作为方法的参数!!
    //3.block作为返回值!!!(扩展非常强!!)
    Person * p = [[Person alloc]init];
    p.run(100);

}


-(void)block2{
    Person * p = [[Person alloc]init];
    [p eat:^(NSString * s) {
        NSLog(@"爱吃%@",s);
    }];

}

-(void)block1{
    Person * p = [[Person alloc]init];

    //block  -- inlineBlock
    void(^HKBlock)() = ^() {
        NSLog(@"block");
    };

    p.block = HKBlock;
    _p = p;


}



#import <Foundation/Foundation.h>

@interface Person : NSObject

/** block :ARC使用strong  非ARC copy  */
@property(nonatomic,strong) void(^block)();

-(void)eat:(void(^)(NSString *))block;

-(void(^)(int))run;


@end
#import "Person.h"

@implementation Person

-(void)eat:(void (^)(NSString *))block{
    block(@"苹果");

}

-(void (^)(int))run
{
    return ^(int m){
        NSLog(@"哥么跑起来了!!跑了%d",m);
    };
}

@end