📚Best Practices for Ansible Core – (13) Comprehensive Analysis of Playbook Keywords🚀 🚀 Unlock the Secret Weapon of Ansible Playbook: Keywords!📝 🌟 Here comes the popular science notes!Want to write concise, efficient, and elegant Ansible Playbooks? This comprehensive note will help you master Playbook keywords in one go! From play to task, from variables to … Read more
1. Exception Handling Practices When writing C++ code, unexpected errors and exceptions may occur. To make our code more robust and reliable, we need to use the exception handling mechanism to handle these situations. 1. Writing Exception Handling in High-Quality Code When writing high-quality code, we should follow some guidelines to design and write exception … Read more
At three o’clock that morning, I was dealing with an unexpected online failure with my colleagues, where dozens of service nodes needed urgent configuration updates. Manual operation? Not realistic. Writing a temporary script? Too slow. At that moment, I remembered the Ansible + Python automation framework I had configured earlier. Within three minutes, all node … Read more
Fundamentals are the Foundation of Dance Throughout the process of learning dance, instructors repeatedly emphasize the importance of fundamentals. In fact, many technical movements in dance rely heavily on solid fundamentals. For dance, fundamentals are like the foundation of a building; only when the foundation is strong can the building be sturdy, and only then … Read more
I remember when I first started in the industry, I took over a PLC program left by a former colleague, and it was a complete mess! There were no comments, variable names were arbitrary, and the program structure was chaotic. It took me three whole days to understand this program. This is why today I … Read more
Python Indentation Rules: Writing Standards for Improved Code Readability In Python programming, indentation is an important concept. Unlike many other programming languages that use braces or keywords to define code blocks, Python uses indentation to distinguish the hierarchy and structure of the code. Therefore, understanding and correctly using indentation rules is crucial for writing clear … Read more
🔥 Good afternoon, everyone! I have compiled 108 Python graduation projects for you to practice and test your skills. In just two hours, you can create something of your own and master Python through practice. (Source code + documentation included) Feel free to use it!1、[Python Image to ASCII Art]2、[2048 Game Implemented in 200 Lines of … Read more
In the vast field of embedded software development, code comments have always been a controversial topic. Some teams adhere to the belief that “code is documentation,” arguing that excellent code should be self-explanatory; while others advocate for detailed code comments, believing that comments can help other developers understand the logic and intent of the code … Read more
Recently, I have been frequently asked by newcomers about I/O mapping, which is quite annoying. After working in this field for over ten years, I have seen too many people who can’t even understand such basic concepts, constantly complicating simple issues. So today, I will discuss I/O mapping in PLCs, so please stop asking about … Read more
First, it is essential to develop good habits by carefully checking the multimeter for any abnormalities before use. This does not take much time but has a significant impact. For example, check for any damage to the meter, and whether the digits or needle are functioning correctly, especially when measuring high voltages. Always inspect the … Read more