Programmer Think

In the process of doing crawler, we often encounter the following situations: at first, the crawler runs normally and grabs data normally, but the effort of a cup of tea may make mistakes, such as 403 Forbidden; at this time, the web page may appear the prompt of "your IP access frequency is too high", which may be unsealed after a l ...

This tutorial and the full set of source code have been open-source on the OSChina code cloud and will be updated continuously. Please visit the latest version https://gitee.com/goeasy-io/GoEasyDemo-Live-Chatroom.git That fire has been broadcast live in the last two years. It's really indescribable! Often a friend asks, I want to realize a live ...

Mongodb released two available service versions: Community and Enterprise The Monodb we use is a community versionOfficial Recommendation:For the best installation experience, MongoDB provides packages for popular Linux distributions.These packages are the preferred way to run MongoDB. 1. linux platform support Install on Red Hat Supports the ...

Original: [WPF Learning] Chapter 65 Creating Appearance-Free Controls The goal of user controls is to provide a design surface for supplementary control templates, providing a quick way to define controls at the expense of losing future flexibility.This is a problem if you like the functionality of user controls but need to modify them to ...

Introduction Nashorn is a JavaScript engine. Starting from JDK 1.8, nashorn replaced Rhino (JDK 1.6, JDK 1.7) as an embedded JavaScript engine of Java. Nashorn fully supports the ECMAScript 5.1 specification and some extensions. It uses new language features based on JSR 292, including invokedynamic introduced in JDK 7, to compile JavaScript i ...

When we were testing Android phones, The marketing department wants our testing department to test the compatibility of Top 1000 app s, To ensure that our mobile phones can be installed and run normally with so many easy-to-use app s, And the marketing department provides the apk download address of top 1000 in an application market. How to do ...

1. First of all, let's understand what is Josephus ring problem: Tell an interesting story: Joseph is a general of the Jewish army. During the uprising against Rome, his army was defeated. There are only 40 remaining troops. They are all people who would rather die than surrender and become traitors. A group of people voted to die, so they used ...

Tomorrow is Valentine's day. This Valentine's Day is doomed to be a Valentine's day that can't be dated, but not dating doesn't mean that can't be romantic. The ancients were born earlier than us, and those romantic poems were mined out by them. We certainly have no chance. Fortunately, we also have Python, otherwise we don't know how to expres ...

This method only involves how to use the existing tool classes to realize listening. Its specific principle mainly involves calling the underlying API of Windows: defining a hook to hook the keyboard event, but not the specific principle here. 1. Tool code Quote using System; using System.Collections.Generic; using System.Tex ...

demand At present, the network of a company's live broadcast is unstable, resulting in the live broadcast exception. The original solution is to manually find the exception, and then manually switch the network (4G hotspot), but it has a great impact on the business. The first solution is to upgrade the company's network (dif ...