GO Language Learning Road 21

2022/02/12 /* //Basic introduction to processes and threads 1. A process is an execution of a program in an operating system. Is the basic unit for system resource allocation and scheduling 2. Threads are an execution instance of a process and the smallest unit of program execution. * It is a smaller base unit that can run independently ...

Added by php_coder_dvo on Sat, 12 Feb 2022 19:38:12 +0200

[Python] use kfold in sklearn to realize cross validation in the model

In the previous article, the data set is divided into 37 points in order, which will lead to inaccurate results. Therefore, this paper uses the kfold method in sklearn to realize cross validation, so as to make the results more accurate Last article ----- > Python post processing data format run model (pycruise) - verify data validity ...

Added by POGRAN on Sat, 12 Feb 2022 18:52:26 +0200

Django learning 3 based on pycham -- ORM

What is ORM? ORM, Object Relational Mapping (ORM) pattern, is a technology to solve the mismatch between object-oriented and relational databases. In other words, ORM acts as a translation function. Install third-party libraries pip install mysqlclient Create database What exactly can ORM help us do? Create, delete and modify tabl ...

Added by souravsasi123 on Sat, 12 Feb 2022 18:51:00 +0200

Qt android development environment construction

I recommend a free open course of zero sound college. Personally, I think the teacher speaks well. I share it with you: Linux, Nginx, ZeroMQ, MySQL, Redis, fastdfs, MongoDB, ZK, streaming media, CDN, P2P, K8S, Docker, TCP/IP, collaboration, DPDK and other technical contents, learn immediately Recently, I'm working on Qt Android related ...

Added by fat creative on Sat, 12 Feb 2022 18:49:59 +0200

Implementation and source code analysis of Java Dynamic agent

1: Implementation of static agent Define interface /** * @description: * A factory that processes mobile phones * @date: 2022/2/12 * @author: linshujie */ public interface IPhoneFactory { /** * Customized design of mobile phone * @param design */ void makePhoneDesign(String design); } /** * @description: * A fac ...

Added by sublevel4 on Sat, 12 Feb 2022 18:46:41 +0200

vue3 -- event listening: v-on application (@ application)

Binding event Listening Instruction: v-on Abbreviation: @ (grammar sugar) Example: <el-button @click="add('11111111111111')" style="background-color: red"> <el-button @click="add('222222222222222222')" style="background-color: black"> <el-button @click="add('33333333333333333')">Button</el-button> ...

Added by Aretai on Sat, 12 Feb 2022 18:44:34 +0200

Analysis of USB network card sending and receiving data

preface Network subsystem is the top priority of Linux kernel. Today, we start with the network card driver and start the exploration of the network subsystem. hardware environment Raspberry pie 3B + is equipped with Gigabit network card LAN7515, but it uses USB2 0 channel (the maximum theoretical speed is 480Mbps), and the official Etherne ...

Added by br on Sat, 12 Feb 2022 18:26:25 +0200

Friends: what does junk code look like?

  today on wechat What's the most garbage code you've ever seen? Seeing this interesting article, it originally came from Blog posts in CSDN .   §01 import this    after running the following code: import this   you will get: The Zen of Python, by Tim Peters Beautiful is better than ugly. Explicit is b ...

Added by Ozzmosis on Sat, 12 Feb 2022 18:22:26 +0200

java. Quick sort QuickSort

Record the differences and improvements of one-way quick sort, two-way quick sort and three-way quick sort Basic idea: divide the records to be arranged into two independent parts through one-time sorting. If the keywords of one part of the records are smaller than those of the other part and larger than those of the other part, the records of ...

Added by canishk on Sat, 12 Feb 2022 18:19:30 +0200

How does Spring Boot handle logs?

Hi! Hello, everyone. Today I'll teach you how to configure logs in the Spring Boot project. What's the use of logs? Of course, it is to record the system operation records, which is convenient for us to troubleshoot and observe the system operation status. In production practice, log processing is a very important part. Log level Common log l ...

Added by Jammerious on Sat, 12 Feb 2022 18:16:48 +0200