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Author: Lu Lu Those who love technology and are willing to share are mainly engaged in the research of database related technology. Source: original contribution *Aikesheng is produced by the open source community. The original content cannot be used without authorization. Please contact the editor for reprint and indicate the source. 1. o ...

I'm afraid that there is no star sea in my office at home: playing like a running water lamp! Style 1 Style two Style three Comprehensive display effect The flow light understood by Xiaobian is a group of LED lights, which can be turned on and off according to the set style under the control of th ...

Previously, we talked about how to reduce power consumption at the hardware level, how to reduce power consumption by tickless in stm32, etc. (ma level), but the power consumption is not low enough.In the process of using stm32L476 single-chip computer, more low-power modes and clock selection are fo ...

Date of current computer system #include<stdio.h> #include<time.h> int main(void){ time_t now,t1; t1=time(&now); printf("Seconds from 0:00 on January 1, 1970, current calendar time:%u\n",t1); struct tm *localtp; localtp=localtime(&now); printf("Now the time is:%dyear%dmo ...

How to use redis to generate serial number Summary Principle introduction Flow chart 1. Initializing serial number information into cache 2. Generate serial number code implementation 1. Serial number entity class 2. Initialize serial number into cache 3. Generate serial number Code testing Gene ...

Advantages of thread pool The main task of thread pool is to control the number of running threads, add tasks to the queue during processing, and then start these tasks after thread creation. If the number of threads exceeds the maximum A large number of threads are queued to wait for other threads ...

Record a training Article directory Record a training Title Analysis subject Analysis Implementation ideas Expand the train of thought Realization Code Program output Title Analysis subject Write a command line "software" that can automatically generate four primary school c ...

There is no function index function of Oracle in MySQL. It is not accurate to call the Generated Column of MySQL as "function index", but it can achieve the same effect as the function index. Some people also call this feature "derived column". What is Generated Column The value of Generated Column is calculated according to ...

Article directory 1, About sift 2, sift algorithm principle 1. characteristics 2. Solvable problems 3. Algorithm decomposition 4. disadvantages Three. Experiment 1.SIFT feature extraction and display feature points 3.1.1 code implementation 3.1.2 result display 2.SIFT feature matching 3.2.1 cod ...

Body 1. Content summary This paper mainly discusses the following two problems: Bit operation of JavaScript: first, simply review the lower bit operation, which is usually used less. I believe that many people forget about it as much as I do Authority Design: according to the characteristi ...