Programming VIP

Introduction: Hello, iron juice ~ I brushed such a short video on the subway today. I wonder if I can write a similar class roll call program. The idea can't stand waiting. Just write it~ 1, Preparatory work 1.Tkinter Tkinter is Python's built-in TK GUI tool set. TK is the native GUI Library of Tcl language. As a graphic design tool of ...

  I summary In the last [crawler] article on deploying Scrapy to k8s, it was mentioned that errors were reported in the custom ， spiderkeeper ， image, so I submitted a ， python ， package called ， spiderkeeper new ， based on its source code to the ， pypi ， official website. This article will record the whole construction process and ...

Today, we are going to learn about pointers in C language. Pointer can be said to be a heavy role in C language. We can understand and master pointer. In the future, when we write code, we feel like a fish in water and at ease. Next, let's have a look!!! Contents of this chapter: 1. What is the pointer? In computer science, a pointer is an ob ...

1, Node JS event loop        Node.js is a single process and single thread application, but because of the asynchronous execution callback interface provided by V8 engine, a large number of concurrency can be handled through these interfaces, so the performance is very high.     &nbs ...

1, Prefix tree Generally, when designing websites, there will be problem publishing or content publishing functions. A very important point of these functions is how to realize sensitive word filtering. Otherwise, there may be bad information publishing, or the published content may contain code fragments with malicious functions. The basic al ...

In development Winform When programming, we often need to make some custom control modules as needed, so that we can reuse the system modules or achieve better results. However, when using, we often find some inexplicable errors at the design time, so how should we develop and debug the control design time, and how to solve the errors at the de ...

##Prepare internship diary This is my course experience in preparing for internship. It only records the knowledge I think needs to be recorded and newly learned during the study. What I say is all my personal understanding. If there is any error, please correct it and discuss it. JAVA basic course It's where I study. 2022.01.14 JAVA foundation ...

Common methods of P471String class - common methods of P477StringBuffer Common methods of P471String class // 4.indexOf gets the index of the first occurrence of the character in the string object. The index starts from 0. If it is not found, it returns - 1 String s1 = "wer@terwe@g"; int index = s1.indexOf('@'); int index = s1.indexOf( ...

The source code version involved in this article is Go SDK 1.16.1 1. Basic structure of map Map is a common data structure in Golang. It is essentially a hash table, similar to HashMap in java and dict in Python. It is a data structure that stores key value pairs. A general map contains two main structures: Array: the values in the arra ...

catalogue Part I: zip traversal Part II: stream function input and output (1) map() traversal (2) reduce iteration accumulation (3) filter decision Part III: Enumeration Part I: zip traversal In python, the zip() function can compress the elements of multiple iteratable objects together and return an iteratable object. With the help ...