Programmer Think

Yesterday, I wrote a small toy with special effects of Web mouse. Of course, the code is not mine. It comes from Robin. The plug-in is also very simple, but considering that not everyone likes to use plug-ins, including myself, I took the time to write a detailed one today course , if you write the code directly in the topic, you don't need to ...

1. Create a thread with an initial function    note that when c + + runs an executable program (creates a process), it will automatically create a main thread. This main thread and the process live and die together. When the main thread ends, the process ends. #include "pch.h" #include <iostream> #include<thread> void pr ...

C + + polymorphic and virtual functions quick start tutorial As mentioned in the previous chapter, the pointer of the base class can also point to the derived class object. Please see the following example: #include <iostream> using namespace std; //Base class People class People{ public: People(char *name, int age); void displa ...

[design mode] observer modeprefaceThe definition of Observer mode: it refers to the one to many dependency between multiple objects. When the state of an object changes, all objects that depend on it are notified and automatically updated. This mode is sometimes called publish subscribe mode and model view mode. It is an object behavior mode.Ob ...

In large applications, it is a common design pattern to configure the master-slave database and use read-write separation. The common implementation method is to use database middleware. This paper introduces how to realize the configuration and dynamic switching of multiple data sources by writing code. The core is to use the abstract class Ab ...

Most of the functions of the program come from conditional logic, and most of the complexity comes from conditional logic. Sometimes we need to use refactoring to make conditional logic easier to understand. For example: Explode conditional expressions: handle complex conditional expressionsMerge condition expression: clarify logical combinati ...

Recently, I want to realize a function of JD scanning code, logging in, automatic ordering and automatic rush purchase (ps: realize JD automation function), !!! This project is purely for learning and commercial use is prohibited Let me share with you how I can find the corresponding interface and parameters step by step by analyzing JD's web ...

reference resources drivers\block\xd.c and drivers\block\z2ram.c ls /dev/sd* -l view all disk devices. The disk with secondary device number 0 represents the whole disk, and the device numbers 1, 2 and 3 represent the partitions of the disk. Program 1 uses memory to simulate disk to simply process request do_ramblock_request #include & ...

origin Recently used Go brush LeetCodeFirst question, sum of two numbers. When solving the problem, I use traversal to solve. I accidentally find that the beats of for and range are inconsistent. In the spirit of in-depth research (I don't know anything), I want to compare the performance of the two.Article reference Geek rabbit The original o ...

1, IO model - signal driven Using the signal mechanism in system programming, first let the program install the SIGIO signal processing function (when the socket has data, the system will automatically send SIGIO signal). We only need to capture this signal in the program to know whether there is data. If there is data, we can read it out.   ...