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Add multiple validation rules to a text input box. We can see from the above code that we only give the input box to correspond to only one validation rule. For example, in the above, we can only validator.add (registerForm.userName, 'isNotEmpty', 'User Name cannot be empty'); However, if we want to verify whether the input box is empty and whether the length of the input box is not less than 10 bits, then we expect to pass parameters like the following:这场激情戏潘慧如与舞阳从玄关战到床上，潘慧如平时就有健身习惯，在开拍前仍特别找教练加强训练背部线条，因为配合剧情演出她先大胆的穿胸罩上阵演出，之后再脱去背部全裸演出，她表示背部全裸有先做好安全措施，在胸前贴有Nubra与透气浮水胶带，而且拍摄现场有清场，只留下导演与摄影，潘慧如说：“舞阳这老外很贴心又大方，拍时他不会盯着胸部看，导演一喊卡时，他很专业的立刻就会用他的身体替我挡住镜头，让我不尴尬也卸下心防。”太过悲观，但是自己已经没有多少时间，该说的都必须讲出来。这五人为避开赶来抢夺屠龙刀的江湖人，离开了灵蛇岛，流落到附近的一个无名荒岛上。Demo Xia: I downloaded all the popular frameworks at present. I ran for the examples in different frames and looked at the results. I just thought it was good. Then I thought, well, in-depth learning is just like that. It's not too difficult. This kind of person, I met a lot during the interview, many students or just changed careers came up to talk about a demo, handwritten number recognition, CIFAR10 data image classification and so on, but you asked him how the specific process of handwritten number recognition was realized? Is the effect now good and can it be optimized? Why should the activation function choose this, can it choose another? Can you explain the principle of CNN briefly? I'm overwhelmed.不就是八股么，有啥了不起的。