Programming VIP

1. Process control statement Java provides some process control statements to control the execution process of the program Sequential structure - program default process Branch structure - if, switch Loop structure - for, white, do... while 1. Branch structure 1.if branch The code that executes a branch is determined according to the determ ...

I regular expression 1. Concept of regular expression Regular expression, also known as regular expression, is often abbreviated as regex, regexp or RE in code. It is a concept of computer science. Regular expressions are often used to retrieve and replace text that conforms to a pattern (rule). There is not only one regular expression, and ...

polymorphic Simple understanding The different states of something at different times For example: Water: Solid, liquid, gaseous Solid water is water, liquid water is water, and gaseous water is water Fruits: Paramita, banana, durian Parami is a fruit, banana is a fruit, durian is a fruit The fruit is parami, so it's not allowed. anim ...

🏠: Blog home page: Incoming bogey 📕: Today's article: [Java] IO series BufferedReader 💝: I hope my analysis of IO series can help you 🎈 🌱: Boji is still trying to learn JavaSE. If you have any questions or omissions, please give me more advice 🙏 ☀️: On the way of self-study and growth, thank you for your company! No hurry ， No Pause ...

Object oriented programming idea 1, Memory partition model When the C + + program is executed, the memory is divided into four areas Code area: it stores the binary code of the function body, which is managed by the operating systemGlobal area: store global variables, static variables and constantsStack area: automatically allocated and ...

1. Introduction to express Express is based on node JS platform, a fast, open and minimalist Web development framework (a third-party package on npm). Its function is similar to that of node JS is similar to the built-in http module, which is specially used to create a Web server. The built-in http module is very complex but inefficient; ...

Recently, when developing the CRM management system, I encountered a demand: when using the system, the personnel of the sales department can "get" potential customer clues from the [clue public sea] module to their own [clue private sea] module to become their own private potential customer clues for later tracking and development. A ...

When we collect specific data, it often takes a long time. Sometimes, because of some things, it is impossible to wait for the results in front of the computer for a long time, so the program needs to automatically send us e-mail and other notices after a period of time, and execute exit program or shutdown and other aftercare work to save reso ...

1,AQS 1.1 overview Its full name is AbstractQueuedSynchronizer. It is the framework of blocking lock and related synchronizer tools, which has its own characteristics The state attribute is used to represent the state of resources (exclusive mode and shared mode). Subclasses need to define how to maintain this state and control how ...

Depth operator overload (2) 1. When an operator is overloaded, when is it returned as a reference and when is it returned as a value? Return as value: Int operator+(const Int& it) { this->value += it.value; return Int(this->value + it.value); } Return by reference: Int &operator+=(const Int &it) { ...