Directory Foreshadowing: Introduction to the join() function and the detach() function are associated with the main thread 1. There are hidden dangers in the detach() function 2. Join() function call timing – blocking call 3. Join() function call timing – call in the destructor Foreshadowing: Introduction to the join() function and The detach() function is […]
Tag: uses
Taro3+Vue3 uses echarts
Picture first, hang without picture One. Taro supports echarts Official description: https://taro-docs.jd.com/blog/2018-09-18-taro-1-0-0#Support citing third-party component libraries on the applet side 2. Introduce echarts-for-weixin plug-in github address: https://github.com/ecomfe/echarts-for-weixin Only import wx-canvas.js under the ec-canvas folder 3. Custom download echarts Address: https://echarts.apache.org/zh/builder.html You can choose the version yourself, the author tested both 5.3.3 and 5.4.1 to support […]
iOS uses FFmpeg command line
Official Documentation FFmpeg is a set of open source computer programs that can be used to record, convert digital audio and video, and convert them into streams. It provides a complete solution for recording, converting and streaming audio and video. The code of FFmpeg consists of two parts, one part is library and the other […]
SQL grammar: Analysis of the seven clauses of select
Mysql version: 8.0.26 Visual client: sql yog Table of Contents 1. The order of the seven clauses 2. Demonstration 2.1 from statement 2.2 on clause 2.3 where clause 2.4 group by clause 2.4.1 WITHROLLUP, added after group by 2.4.2 Can statistics be grouped by multiple fields? 2.4.3 When grouping statistics, the problem of the field […]
Python uses pyqt to write interface tools
The previous article introduced the use of python’s own tkinter package to write tools with interfaces. This article introduces the use of pyqt to develop test tools. The advantage of tkinter is that python comes with it, which is easy to use (but the handwritten controls are complicated), and the layout and placement are not […]
2017.07.14 Flask uses port 80 service, Nginx+uWSGI
1. Operating system environment: Ubuntu Server 16.04.1 LTS 64-bit 2. Preparation before installation: (1) Install Python environment Next is python. The default environment of Ubuntu has pre-installed python 2.7, so you only need to install the pip installation tool of python. pip is used to install some software tools based on python applications, which will […]
ASP.NET Core3.1 uses Ocelot open source gateway
1. Build downstream services Add 2 ASP.NET Core projects, namely Order.Api and User.Api The Order.Api port is set to 5001, and the User.Api port is set to 5002, both using the HTTP protocol UsersController code: [ApiController] [Route(“v1”)] public class UsersController : ControllerBase { private static List_users = new List { new UserItem(“Mack”), new UserItem(“Jack”) }; […]
Python uses tkinter to write tools with interface
Python is generally used to write pure scripts, but it can also be used to produce products with views, such as web pages and client tools. The advantage of making a tool is that it can be used by people who don’t know the code, and there is no need to modify the parameters in […]
Linux uses supervisor to manage processes
Now suppose a script is, hello.py, the content is fo = open(‘xx.txt’,’w’) while 1: fo.write(‘hello world’) print(‘hi’) time. sleep(1) If you use python hello.py, the console will always print hi, and you will not be able to do other tasks. You must open a window in xshell. If ctrl + c, the program ends directly. […]
Keras’s Model model uses
This topic mainly explains the use of the model Model in the Keras framework, mainly including: 1. Two ways to use the model; 2. Realization of classic model (custom model); 3. Customized training of the model; 1. Two ways to use the model Keras provides two computing models through two APIs: Functional model: through the […]