Programmer Group

1, Disposition Linux: CentOS-7-x86_64-DVD-1810.iso 2, Installation 1. If you have previously installed an older version of Docker, you can uninstall it using the following command: yum remove docker \ docker-client \ docker-client-latest \ docker-common \ docker-latest ...

Article content: One pin of the GPIOA end of the stm32F103 core board is connected to an LED, and one pin of the GPIOB port is connected to a switch (replaced by DuPont line simulation). Interrupt mode programming is adopted. When the switch is connected to high level, the LED lights up; When connected to low level, the LED is off. And use th ...

1 Introduction to easyexcel EasyExcel is an open source project of Alibaba open source, which is a simple and memory saving read-write Excel based on Java. Support reading and writing 100M excel while saving memory as much as possible. GitHub address: https://github.com/alibaba/easyexcel Official documents: https://www.yuque.com/easyexcel/do ...

Promise object, solve callback hell, and execute code synchronously This article records the knowledge points studied BY: Lin Yi preface: Asynchronous operation is an advantage of JS and brings great trouble. There is a word called callback hell, that is, in a callback function, execute another asynchronous task and nest it all the time, res ...

Introduction to Webshell What is a WebShell webshell is a command execution environment in the form of web page files such as asp, php, jsp or cgj, which can also be called a web page back door Because Web shell mostly appears in the form of dynamic script, it is also called the back door tool of the website Attackers can use webshell t ...

Knowledge introduction SMART is a disk self analysis and detection technology, which has been basically popularized as early as the late 1990s Each hard disk (including IDE and SCSI) will record its own parameters when running These parameters include model, capacity, temperature, density, sector, seek time, transmission, bit error rate, etc A ...

1, Experimental conclusion 1. Experimental task 1 Task 1-1 task1_1.asm source code 1 assume ds:data, cs:code, ss:stack 2 3 data segment 4 db 16 dup(0) 5 data ends 6 7 stack segment 8 db 16 dup(0) 9 stack ends 10 code segment 11 start: 12 mov ax, data 13 mov ds, ax 14 15 mov ax, stack 16 mov ss, ax 17 ...

Variable scope memory The es variable has two different types of data: original value and reference value Original values: undefined, null, boolean, number, string, symbol The variable that holds the original value is accessed by value Reference value: an object stored in memory. It is an object composed of multiple values. JavaScript cannot d ...

Through the previous introduction, we have learned that a very important feature of spring is IOC. Next, we will take a look at how to use IOC container to help you better understand the advantages of spring. 1,spring_helloworld (1) It is implemented by manually loading the jar package, which is divided into three steps. Now it is almost unne ...

What does Joseph's problem describe? Joseph's problem: there are N people in a circle, and each person has a number. The number is determined by the order of entering the circle. The first person entering the circle is numbered 1, and the last one is N. The number starts from the K (1 < = k < = N), and the person counting to m (1 < = m ...