.NET Core Quick Start Tutorial 1. The beginning: Talking about .NET Core
1. The Origin of .NETCore When talking about .NETCore, we must not mention its predecessor .NET. Java was in the limelight at that time, and Microsoft also favored Java. The Java virtual machine on the Windows platform was developed by Microsoft based on JVM standards. It is said to be the best performance Java virtual machine at that time. However, Microsoft has its own little abacus, trying to bundle Java with the Windows platform and add some Windows-specific features. Sun's dissatisfaction with this led to a breakdown of the relationship between the two parties, and Microsoft then launched .NET. .NET has borrowed many features of Java since its inception and gradually surpassed Java in language features and form development. Java in version 1.6
May 07, 2025 pm 04:54 PM
Solve the problem that the 80 port under Windows 10 is occupied by the System with PID 4
1. Background Recently, out of curiosity, I updated the Windows 10 system, which is very easy to operate and the experience is quite good. However, when developing in IDEA, when starting the project using port 80, it is found that the port has been occupied. After some attempts, I found a solution and I will share it with you. 2. Solution steps 1. Check the process number PID that occupies port 80 by executing the netstat-ano|findstr "80" command. 2. Since port 80 is occupied by system services, the process cannot be terminated directly. Therefore, use the netshhttpshowservicestate command to view the current HTTP service status. The result is as shown in the figure: from the figure
May 07, 2025 pm 04:51 PM
10 latest tools for web developers
Web development design is a promising career field. However, this industry also faces many challenges. As more businesses and brands turn to the online marketplace, web developers have the opportunity to demonstrate their skills and succeed in their careers. However, as demand for web development continues to grow, the number of developers is also increasing, resulting in increasingly fierce competition. But it’s exciting that if you have the talent and will, you can always find new ways to create unique designs and ideas. As a web developer, you may need to keep looking for new tools and resources. These new tools and resources not only make your job more convenient, but also improve the quality of your work, thus helping you win more business and customers. The trends of web development are constantly changing.
May 07, 2025 pm 04:48 PM
Hadoop pseudo-distributed cluster construction
Software preparation I am using a virtual machine with CentOS-6.6, with the host name repo. Refer to the steps to install a Linux virtual machine in Windows, I installed JDK in that virtual machine, refer to the guide to installing JDK in Linux. In addition, the virtual machine is configured with a key-free login itself, and the settings for configuring key-free login between each virtual machine are referenced. The download address of Hadoop installation package is: https://mirrors.aliyun.com/apache/hadoop/common/. I am using hadoop 2.6.5 version. Upload the Hadoop installation package to the server and unzip [root@repo~]#tarzxv
May 07, 2025 pm 04:45 PM
Chapter 4 Class and Object-Oriented Programming Chapter 4 Class and Object-Oriented Programming
Chapter 4 Class and Object-Oriented Programming In the previous chapters, we learned Kotlin's basic language knowledge, type systems and other related knowledge. In this chapter and the next chapter, we will learn Kotlin's support for object-oriented programming and functional programming. In this chapter, we introduce Kotlin's object-oriented programming. 4.1 A brief history of object-oriented programming In the late 1950s, when writing large programs in the FORTRAN language, because there was no encapsulation mechanism, the variables at that time were all "global variables", so variable name conflicts would inevitably occur frequently. In ALGOL60, program blocks identified by Begin-End are used to make the variable names inside the block local to avoid them from outside the block in the program
May 07, 2025 pm 04:42 PM
14 common shortcut keys that must be remembered in Win7 system
When using computers on a daily basis, the application of shortcut keys can significantly improve our productivity, especially when gaming or using specific software. Shortcut keys are not only convenient to operate, but also play an important role in Windows 7 system, helping us complete tasks more efficiently. Ctrl Shift N: Create a new folder. Press Ctrl Shift N in File Explorer to quickly create a new folder. If you use this shortcut key in IE9 browser, the current tab page will be opened in a new window. Ctrl Shift Double-click the left mouse button: Run the program as an administrator In Windows 7, some programs need to be run as an administrator to operate normally. The traditional method is to right-click the program icon and select
May 07, 2025 pm 04:39 PM
Eagle's own crawler function image database
Eagle is a powerful image database software with built-in crawler function that can batch capture pictures on Huabaiwang to meet your needs for image management. Eagle not only automatically recognizes the tone of the picture, but also supports finding the picture through color. In addition, it also provides various functions such as shape search, source search and size search to help you easily manage and find pictures. Whether you are using Windows, Mac or ChromeOS, Eagle can run smoothly in various environments to meet your multi-platform needs. Eagle also provides convenient browser plug-ins that support batch saving of pictures on the current web page. You can quickly save screenshots, original web page images or local files, and use simple drag and drop operations to transfer your favorite pictures
May 07, 2025 pm 04:36 PM
Python development_python installation
Python can run on a variety of platforms, including our common ones: Windows, Unix, Linux, and Macintosh. This article will introduce in detail the process of installing Python in Windows operating system. My operating system is Windows 7, 32-bit version. When installing Python, we can choose to install it from the source code or select the already compiled binary version for installation. I chose the latter here. Step 1 Download the installation package. We download the installation package of Python from the official Python website: http://www.python.org. The version I selected is: python-3.3.2.msi click to download, I
May 07, 2025 pm 04:33 PM
Bypassing the blacklist command to execute tips (two)
In the first article, we explore how to bypass the blacklist limit of command execution by using methods such as delimiters. Here is a detailed description: In the second article, we will discuss how to leverage environment variables to bypass the limitations of blacklists and spaces. First, let’s look at the situation of the Windows system. Let's first look at the environment variables: What should we do if a command execution vulnerability now filters spaces? Please see the picture below: What did you find? We can use the values of the environment variable to get what we want. For example, we now try to bypass spaces to execute the command: Someone might ask, what if there are no keywords we need in the environment variable? Of course, we can add: Next, let's look at the situation of Unix system, here I
May 07, 2025 pm 04:30 PM
How long does it take to restore the factory settings of win8 to restore the factory settings of win8 to restore the factory settings of win8
The time from restoring Windows 8 system to factory settings is affected by a variety of factors, including hardware performance, the number of software and files installed, and network connection status. Before restoring Win8 to factory settings, you need to back up important files, ensure the power supply is stable, prepare the installation disk or recovery disk and reserve sufficient time. Methods to speed up recovery include: 1) Ensure good hardware performance and upgrade to SSD; 2) Reduce the number of software and files in the system; 3) Keep the network connection stable and fast.
May 07, 2025 pm 04:27 PM
What is the difference between win10 and 11 systems? Comparison of new and old systems
The main differences between Windows 10 and Windows 11 are user interface, performance, security, and compatibility. 1. Windows 11 provides a more modern user interface and "widget" functionality, but the system requirements are higher. 2. Windows 11 improves performance through optimization, but may not be as good as Windows 10 on old hardware. 3. Windows 11 enhances security, such as the "WindowsHello" enhanced version and TPM2.0 requirements. 4. Windows 11 has better support for new technologies, but its compatibility with old applications is not as good as Windows 10. Which system to choose depends on your specific needs and equipment configuration.
May 07, 2025 pm 04:24 PM
How to return the previous version of win11 win11 system rollback operation guide
Starting the rollback function on Windows 11 must be performed within 10 days after the upgrade. The steps are as follows: 1. Open "Settings", 2. Enter "System", 3. Find the "Recover" option, 4. Start rollback, 5. Confirm the rollback. After rollback, you need to pay attention to data backup, software compatibility and driver updates.
May 07, 2025 pm 04:21 PM
How to Shut Down Windows Without the Start Menu
There may be times when you need to shut down your Windows PC, but Explorer is functioning properly. Or perhaps you’re looking for a quick way to shut things down using just the keyboard. Whatever the reason, we’ve got several start
May 07, 2025 pm 02:01 PM
What is AI? A Beginner's Guide for Linux Users
Artificial Intelligence (AI) is a term that’s been buzzing around for a while now, from self-driving cars to voice assistants like Siri and Alexa, AI is becoming a part of our everyday lives. But what exactly is AI, and why should Linux users care ab
May 07, 2025 am 11:23 AM
Hot tools Tags
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
vc9-vc14 (32+64 bit) runtime library collection (link below)
Download the collection of runtime libraries required for phpStudy installation
VC9 32-bit
VC9 32-bit phpstudy integrated installation environment runtime library
PHP programmer toolbox full version
Programmer Toolbox v1.0 PHP Integrated Environment
VC11 32-bit
VC11 32-bit phpstudy integrated installation environment runtime library
SublimeText3 Chinese version
Chinese version, very easy to use
Hot Topics
1664
14
1423
52
1317
25
1268
29
1244
24