5-3 RAC忽略

#import "ViewController.h"

#import 
#import 

@interface ViewController ()

@property (weak, nonatomic) IBOutlet UITextField *textfiled;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    
    RACSubject * subject = [RACSubject subject];
    
    //skip: 跳跃几个值
    [[subject skip:2] subscribeNext:^(id  _Nullable x) {
        NSLog(@"%@",x);
    }];

    [subject sendNext:@"1"];
    [subject sendNext:@"2"];
    [subject sendNext:@"3"];
    
    
    
}

-(void)distinDemo{
    //1.创建信号
    RACSubject * subject = [RACSubject subject];
    
    //忽略掉重复数据
    [[subject distinctUntilChanged] subscribeNext:^(id  _Nullable x) {
        NSLog(@"%@",x);
    }];
    
    //请求回来
    [subject sendNext:@"abc haha hehe"];
    [subject sendNext:@"hehe"];
    [subject sendNext:@"1"];[subject sendNext:@"1"];
    [subject sendNext:@"2"];
    [subject sendNext:@"2"];

}

-(void)takeDemo{
    RACSubject * subject = [RACSubject subject];
    
    //take:指定拿前面的哪几条数据!!(从前往后)
    //takeLast:指定拿前面的哪几条数据!!(从后往前)注意点:一定要写结束!!
    [[subject takeLast:2] subscribeNext:^(id  _Nullable x) {
        NSLog(@"%@",x);
    }];
    
    [subject sendNext:@"2"];
    [subject sendNext:@"3"];
    [subject sendNext:@"1"];
    [subject sendCompleted];
    
    
    
//    RACSubject * subject = [RACSubject subject];
    //专门做一个标记信号!!
    RACSubject * signal = [RACSubject subject];
    
    //take:指定拿前面的哪几条数据!!(从前往后)
    //takeLast:指定拿前面的哪几条数据!!(从后往前)注意点:一定要写结束!!
    //takeUntil:直到你的标记信号发送数据的时候结束!!!
    [[subject takeUntil:signal] subscribeNext:^(id  _Nullable x) {
        NSLog(@"%@",x);
    }];
    
    
    [subject sendNext:@"2"];
    
    //[signal sendNext:@".."];
    [signal sendCompleted];//标记信号!!
    
    [subject sendNext:@"3"];
    [subject sendNext:@"1"];
    [subject sendCompleted];

    

}

-(void)ignoreDemo{
    
    //ignore:忽略
    RACSubject * subject = [RACSubject subject];
    
    //忽略一些值!!
    RACSignal * ignoreSignal = [[[subject ignore:@"1"] ignore:@"2"] ignore:@"3"];
    
    //订阅
    [ignoreSignal subscribeNext:^(id  _Nullable x) {
        NSLog(@"%@",x);
    }];
    
    //发送数据
    [subject sendNext:@"1"];
    [subject sendNext:@"2"];
    [subject sendNext:@"13"];
    [subject sendNext:@"3"];
}

-(void)filterDemo{
    
    [[_textfiled.rac_textSignal filter:^BOOL(NSString * _Nullable value) {
        //value:源信号的内容
        return [value length] > 5;
        //返回值:就是过滤条件,只有满足这个条件,才能获取到内容
    }] subscribeNext:^(NSString * _Nullable x) {
        NSLog(@"%@",x);
    }];

}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}


@end