一，tuple，可以装任何对象，没有顺序，取值用[];

    RACTuple *tuple = [RACTuple tupleWithObjects:@1,@"zhang",@78, nil];
    NSLog(@"%@",tuple[1]);=

二，RACSequenceb遍历数组和字典

• 1,遍历数组

    NSArray *array = @[@"zhang",@2, @8,@"jack"];
    RACSequence *sequence = array.rac_sequence;
    [sequence.signal subscribeNext:^(id x) {
        //NSLog(@"内部会自动遍历数组");
        //NSLog(@"%@",x);
    }];

• 2,遍历字典

 NSDictionary *dic = @{
                          @"name": @"zhangdanfeng",
                          @"age":@20,
                          @"height":@1.69,
                          };
    [dic.rac_sequence.signal subscribeNext:^(id x) {
        //返回值x是元组
        //1,取出元组元素方法一：
        NSLog(@"%@--%@",x[0],x[1]);
        //2,取出元组方法二：(宏)
        RACTupleUnpack(NSString *key, NSString *value) = x;
        NSLog(@"%@---%@",key, value);
    }];

三,字典转模型初级用法

NSMutableArray *flags = [NSMutableArray array];
    
    NSArray *flagsArray = [NSArray arrayWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"flags.plist" ofType:nil]] ;
    [flagsArray.rac_sequence.signal subscribeNext:^(NSDictionary *x) {//x其实是字典
        
        //需要注意的是，这里面的操作都是异步操作
        
        IMFlag *flag = [IMFlag flagWithDict:x];
        //之后创建一个数组并把flag模型放入数组中即可
        [flags addObject:flag];
    }];
    
    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1.0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
        NSLog(@"----%@",flags);
    });

四，字典转模型高级用法：(直接用sequence映射map)

  NSArray *resultArr = [[flagsArray.rac_sequence map:^id(NSDictionary *value) {
       
        //value是遍历数组中的内容，这里也就是字典
        return [IMFlag flagWithDict:value];
    }] array];
    
    NSLog(@"%@",resultArr);