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1, What is polymorphism The three characteristics of object-oriented are encapsulation, inheritance and polymorphism.Definition of polymorphism: parent class reference variables can point to subclass objects, allowing different objects to call the same method, that is, the same method can have different implementation forms according to differ ...

background Everyone has learned how to write code in a standard and concise way, but they rarely learn how to submit code in a standard and concise way. Now we basically use git as a tool for source code management. Git provides great flexibility. We submit / merge codes according to various workflow s. This flexibility is not well controlled a ...

5.Client Library CPP client library: Provide library/interface for ros programming For example, set up a node, publish a message, invoke a service, and so on Provides support for both cpp and python languages, typically using cpp roscpp rospy 5.1 roscpp ros provides an interface for using cpp and topic,service,param, and so on ROS CP ...

Welcome to my GitHub https://github.com/zq2599/blog_demos Content: classification and summary of all original articles and supporting source code, involving Java, Docker, Kubernetes, DevOPS, etc; Overview of this article Learn more about the circuit breaker function of Spring Cloud Gateway: Let's talk about theory first Then dete ...

Download git tools Download link: Portal windows can be directly opened and installed by next. mac can download xcode directly from the app store. After the installation is completed, enter the following command to check whether the installation is successful git --version git management mode git has four working areas: working directory, ...

The personal station has been using Hexo before. After a long time, on the one hand, it is aesthetic fatigue. On the other hand, there are more and more articles, and the generation is slower and slower under Hexo, so it is considered to migrate to Hugo this weekend On the whole, it is relatively smooth, but most of the websites are built unde ...

GIT Here are the most complete strategies about GIT in the whole network. Please praise it before you see it to prevent getting lost 01. What is GIT concept Git (pronounced / g) ɪ t /) is an open source distributed version control system, which can effectively and quickly deal with project version management from very small to very large. ...

Construction environment: Gitlab server 192.168.152.131 gitlab installation address: https://about.gitlab.com/install/ 1: Native manual installation gitlab 1. Install and configure the necessary dependencies sudo apt-get update sudo apt-get install -y curl openssh-server ca-certificates tzdata perl 2. Add GitLab package and install it cu ...

Hello everyone, let's continue to learn Git. Your legendary house building story is really back! Remember who you are? You are the backbone of the country! And don't forget the old Wang next door you just hired. 1. Merger conflict According to my train of thought, there will be any conflict between you and Lao Wang next door, but who are you ...

Please indicate the source for Reprint: simiam.com Amway: py awesome Kit Py awesome kit is a python toolkit I have been tossing about recently. It provides functions commonly used in the process of big data development and data analysis. I hope it can be gradually enriched and improved in the future. Project address: https://github.com/monk ...