#import <Foundation/Foundation.h>

@interface Person : NSObject

- (Person *(^)())study;

- (Person *(^)())run;

@end

#import "Person.h"

@implementation Person

- (Person *(^)())study {

    return ^{

        NSLog(@"study");

        return self;

    };

}

- (Person *(^)())run {

    return ^{

        NSLog(@"run");

        return self;

    };

}

@end

#import <Foundation/Foundation.h>

#import "Person.h"

int main(int argc, const char * argv[]) {

    @autoreleasepool {

        Person *p = [[Person alloc] init];

        p.study().run();

    }

    return ;

}

-- ::34.247 block的使用[:] study

-- ::34.248 block的使用[:] run

Program ended with exit code: