Programming VIP

1. Create a new react+ts project npx create-react-app <appname> --template typescript 2. push the new local project to the remote warehouse New remote warehouse Open the local project directory and add all the existing files in the current directory to the newly created git warehouse Execute git add Submit the added documents and w ...

This paper mainly introduces the environment deployment and configuration of ELK related components, and takes the system syslog as the source data input to test and verify the data reception of elasticsearch and the data display of Kibana. 1. Introduction to basic concepts and environment configuration 1.1 basic concept of Elk ELK is an o ...

Official usage (custom container) https://mobile.ant.design/components/list-view-cn/#components-list-view-demo-basic-sticky The official method of use is very smooth at first glance, but there will be some unexpected problems as soon as the data is put on. I have deep experience At first glance, some friends may not understand the meaning of o ...

concept In Java, a class can be defined in another class or a method. Such a class is called an inner class. In a broad sense, internal classes generally include these four types: member internal classes, local internal classes, anonymous internal classes and static internal classes. Member inner class Member inner class is the most ...

Hello, I'm Xiaofu~Technology exchange pays attention to official account: something inside programmersPortal: Original address Git should be familiar to everyone. Skillfully using git has become a basic skill of programmers. Although there are cow X client tools such as Sourcetree at work, which makes it convenient to merge code. But job interv ...

A baby suckling dog will have a name, breed and a bunch of lovely characteristics as its attributes. If you model it as a class and only use it to hold these attribute data, you should use the data class. When using data classes, the compiler will automatically generate toString(), equals() and hashCode() functions for you, and provide them o ...

Web page parsing tool BS4 Beautiful soup is a Python library that can extract data from HTML or XML files. Its use is more simple and convenient than regular, and can often save us a lot of time. Official Chinese documents https://www.crummy.com/software/BeautifulSoup/bs4/doc/index.zh.html install pip install beautifulsoup4 Parser Parse ...

1. Extension operator (1) Basic usage Array to parameter sequence (comma separated) let arr = [1,2,3]; console.log(...arr); // 1 2 3 function call let arr = [1,2]; function add(x,y) { console.log(x+y); }; add(...arr); // 3 Extension operators can place expressions const arr = [ ...(x>0 ? ['a']:[]), 'b', ] If the e ...

catalogue 1. Definition and composition of class 1.1 definition of class 2.2 use of class 2. Classes, objects and references Type 2.1 2.2 object 2.3 references 3. Class knowledge expansion 3.1 initial value of member variable 3.2 define your own reference in the class 3.3 array of classes 1. Definition and composition of class 1 ...

The test () part of the predict interface is the source code @FunctionalInterface public interface Predicate<T> { /** * The specific filtering operation needs to be implemented by subclasses * Used to process whether the parameter t meets the requirements */ boolean test(T t); The test method is used to: 1 . Ev ...