Arduino+2.4G module is used as the remote controller of aeromodel

Arduino+2.4G module is used as the remote controller of aeromodel Mengxin's first post, take care of it~ It is estimated that it has been seven or eight years since I played with the model airplane, arduino and all kinds of single-chip microcomputers, and I have been stuck at home because of the epide ...

Posted on Sat, 22 Feb 2020 22:35:34 -0500 by Threehearts

Actively learn the python framework libact configuration tutorial

Actively learn the python framework libact configuration tutorial Configuration Tutorial libact Is a Python package designed to make active learning easier for users.This package not only implements several popular active learning strategies, but also provides an "active learning by learning&qu ...

Posted on Sat, 22 Feb 2020 22:32:32 -0500 by mtrp

How super ledger Fabric uses third party CA

Hyperledger Fabric (HF) provides a fabric CA tool for end users to use their own ca. However, in the production environment, the security of the root CA should be guaranteed as much as possible. For example, the root CA should be taken offline, and the certificate issuing agent in the Hyperledger Fabric environment should be sent to the middle ...

Posted on Sat, 22 Feb 2020 22:14:09 -0500 by linux1880

MyBatis MyBatis Plug-in Principle

MyBatis Plugin Principle MyBatis is very developer-friendly and provides plug-in mechanisms that allow us to enhance MyBatis's functionality to suit our needs.At the bottom is the use of agent mode + responsibility chain mode MyBatis Official https://mybatis.org/mybatis-3/zh/configuration.html#plug ...

Posted on Sat, 22 Feb 2020 21:54:30 -0500 by bloo

Python Automatically Collects WeChat Contacts

The epidemic has finally improved. Thanks to all the white-clothed angels who are fighting for it, you are the best!Fabulous! The white-clothed angels are fighting on the front line, and we can't always lie down at home to make contributions. We should also strengthen our study and strive for a good ...

Posted on Sat, 22 Feb 2020 21:17:25 -0500 by syam92

Use Filter to Solve Request Parameter Scrambling

Use Filter to Solve Request Parameter Scrambling First, you need to know that Tomcat parses the request parameters from the request header or request body that it receives from the browser and decodes them using ISO8859-1 and places them in the ParameterMap. Since we can't solve the problem of scrambl ...

Posted on Sat, 22 Feb 2020 20:38:12 -0500 by evanesq

Jzoj P4261 minimum cost spfa + minimum spanning tree

Main idea: This paper presents an undirected weighted graph composed of nn points and mm edges. Some of the points are black and others are white. Now every white dot must be connected with the nearest black dot through the shortest path (if there are many black dots, you can choose any one of them). We want to minimize the c ...

Posted on Sat, 22 Feb 2020 12:50:21 -0500 by illzz

Python crawler ajax crawls the content of Ma Yun's father's Micro blog

ajax crawling Sometimes when we use Requests to grab the page, the result may be different from what we see in the browser. We can see the normal page data in the browser, but we don't get the result using Requests. The reason is that Requests gets the original HTML document, while the page in the browser is the page passing by again The result ...

Posted on Sat, 22 Feb 2020 12:37:06 -0500 by fifin04

MHA of MySQL high availability cluster

1, MHA introduction At present, MHA (Master High Availability) is a relatively mature solution in the aspect of MySQL high availability. It is developed by yoshimaton (now working for Facebook), a Japanese DeNA company. It is an excellent high availability software for failover and master-slave improvement in MySQL high availability environm ...

Posted on Sat, 22 Feb 2020 12:24:43 -0500 by dahwan

C language: address book management

Functions of address book The address book can be used to store 1000 personal information, each person's information includes: name, gender, age, telephone, address. Besides the most basic function of adding, deleting, modifying and checking, it can also display all information, clear all contacts, sort ...

Posted on Sat, 22 Feb 2020 12:20:30 -0500 by afrancis