Programmer Think

It's not easy to write a blog. Come and play? This problem is slightly different from that of dalao. I use the method of merging and sorting qwq. It should be very clear for you to find the reverse order of merging order. I'm going to talk about how to find the answer to this problem by merging order. Let's look at the rules first For example, ...

What is the Facade in TP? At present, it is a class that is used to facilitate the static way to call the corresponding method to implement the original class (undefined static method).The specific implementation of Facade is as follows:First look at the core document:\thinkphp\base.php`//Register static proxy of core classFacade::bind([ facade ...

1. I learned crud operation of single table before. In practical applications, most of them are multi table Association operations. This article will learn how to deal with the relationship between multi tables. 2. Investigate the relationship between book list and book classification table. There is a many to one relationship between the book ...

|--Requirement description   |--Realization ideas 1. According to the inheritance logic, it is determined that all mobile phones have a mobile phone parent class, which is defined as an abstract class, in which two abstract methods are defined to realize calling and sending information. 2. According to the logic of.... has....a.. Interfac ...

Experimental topology Experimental requirement Configure the IP address for PC1 and PC2 as shown in the figure PC1 belongs to VLAN 10, and PC2 belongs to VLAN 20. The VLAN if three-layer interface is configured on the three-layer switch to realize the three-layer interworking between VLAN 10 and VLAN 20. Verification effect, all PC s can com ...

Create the third table to establish many to many relationship Table creation # The teacher table and student table can be a many to many relationship. When creating a table, you can manually create a third table to establish an association. class Student(models.Model): name = models.CharField(max_length=32, null=True) age = mod ...

[background] At present, we are doing a web project with front-end and back-end separation. The back-end uses django framework, and all API s only return json. In this process, we encounter a problem that all json response django will not actively set the cookies of response object, which further makes the cookie value of csrftoken never appea ...

1. Review yesterday's courses and assignments 1 #1.Use while Cycle input 1 2 3 4 5 6 8 9 10 2 3 ''' 4 count = 0 5 while count < 10: 6 　　count += 1 # count = count +1 7 　　if count == 7: 8 　　　　 print(' ') 9 　　else: 10 　　　　print(count) 11 #Second method 12 13 count = 0 14 while count < 10: 15 ...

Portal: https://ac.nowcoder.com/acm/contest/881/A Meaning: given two arrays a and b, find the maximum p, and satisfy that the subscripts of the minimum values of two arrays in any interval [1,p] are equal. Idea: first, use monotone stack to run out the position of the first smaller number on the left and the first smaller number on the right ...

Swoole and thinkp5 develop WebSocket online chat communication system To use Swoole in ThinkPHP, you need to install the think Swoole composer package, provided that the system has installed the Swoole PECL extension. To install think swoole, execute the composer command in the project root directory of tp5: composer require topthink/think-swoo ...