Programmer Think

[python + Neo4j] simple use of knowledge map tool Write at the front: because the graduation project needs to use the knowledge map tool to visually display the csv form, after learning Zhihu, blog, etc., we decided to use neo4j for preliminary implementation. This article records the whole process of Xiaobai's entry, for novices' reference! ...

Opening words I hope you can learn this article with questions. Here I put forward two questions for you. The first Netty is where a new connection is detected. How does the second new connection register with the nioeventloop thread. netty new connection access processing logic: To detect new connection access, poll the accept event thr ...

In slam, optical flow tracking judges the dynamics of an object in the image, which mainly includes three functions: 1. goodFeaturesToTrack function Function: extract corners at pixel level in the input image, and support harris corners and Shi Tomasi corners. Function prototype: void goodFeaturesToTrack( InputArray image, OutputArray corne ...

The course recommended by Wu Haiyang of wanmen university is very clear. The content of this blog is basically the content of the course. 1, Environment configuration git configuration // Configure user name and mailbox git config --global user.name "yourname" git config --global user.email "your@email" //View profile git config --list //View ...

preface During this period of time, I have benefited a lot from watching the explanation of in-depth learning by up Master Liu Er of station b. Let me know what Inception is and how to embed the structure into the model. Here is the video address: https://www.bilibili.com/video/BV1Y7411d7Ys?p=11&share_source=copy_web Interested fri ...

L2-039 inventory code base (25 points) The above picture is transferred from Sina Weibo: "there are hundreds of millions of lines of code in Alibaba code base, but there are many codes with repeated functions. For example, fast sorting alone has been rewritten hundreds of times. Please design a program that can find out all the codes wit ...

Built in filter factory of Spring Cloud Gateway Built in filter factory Here, all filter factories built in Spring Cloud Gateway are simply sorted into a table. As follows: Filter factoryeffectparameterAddRequestHeaderAdd Header for original requestName and value of HeaderAddRequestParameterAdd request parameters to the original requestParam ...

Problem surface Description [title background] In 215 ad, Liu Bei took Yizhou, and Sun Quan ordered Zhuge Jin to ask Liu Bei for Jingzhou. Liu Bei refused, and Sun Quan was so angry that he sent LV Meng to lead the army to take Changsha, Lingling and Guiyang. Changsha, Guiyang and Shu will surrender immediately. After learning that, Liu B ...

Lock (Synchronized) Before the emergence of Lock interface, the concurrent safe processing of multithreading in Java applications can only be solved based on the synchronized keyword. However, synchronized has some shortcomings in some scenarios, that is, it is not suitable for all concurrent scenarios. However, after Java 5, the emergence ...

Git version control (code management) system 1, Deploy Git 1. Basic environment yum install git yum install dh-autoreconf curl-devel expat-devel gettext-devel openssl-devel perl-devel zlib-devel yum install asciidoc xmlto docbook2X Unzip, compile and install tar -xf git-2.9.5.tar.xz -C /usr/local cd /usr/locat/git-2.9.5 make &am ...