NSArray+howItsDone.m

-(void)enumerateObjectsUsingBlockzzz:(void(^)(id obj, NSUInteger idx, BOOL *stop))block;

-(void)enumerateObjectsUsingBlockzzz:(void (^)(id, NSUInteger, BOOL*))block {
    BOOL stop = NO;
    
    for (int i = 0; i < [self count]; i++) {
        
        block(self[i],i,&stop);
        if (stop) {
            break;
        }
    
    }
}

NSArray *arr = @[@"1", @"2", @"3", @"4", @"5"];
[arr enumerateObjectsUsingBlockzzz:^(id obj, NSUInteger idx, BOOL *stop) {
    NSLog(@"%@ %lu ",obj, idx);
    if ([obj isEqualToString:@"3"]) {
        *stop = YES;
    }
}];