【Prized Discussion】Which is harder, writing code or modifying code?

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This post was last edited by Xiao Fu fu on 2024-6-17 at 13:37. Many people who learn *PLC programming initially hold the misconception that modifying someone else’s program is relatively simple, but this is not the case in reality. Every PLC programmer has their own unique programming style and approach. When we want to modify a program, we need to spend a lot of time and effort understanding the logic and approach of the original program. Another problem is that many PLC programs lack sufficient comments and documentation; such programs are often filled with redundant code and logic, making it difficult for us to know where to start when making modifications. Or some PLC programs can be cumbersome and chaotic when dealing with problems. This is due to the unclear thinking of the original programmers, or because they lacked sufficient planning and design when writing the program. Faced with such a program, we need to spend more time and effort analyzing its logic, identifying the problems within it, and making corrections. After making a set of changes, we might find that rewriting a completely new program is more efficient and quicker than modifying an existing one. Therefore, when programming PLCs, we should pay more attention to the readability and maintainability of the code, so as to avoid making subsequent modifications too complex and difficult. In PLC programming, both \"changing the program\" and \"writing the program\" present their own unique challenges, and it is difficult to determine outright which one is more difficult. It depends on various factors, such as the programmer’s level of experience, familiarity with PLC systems and related equipment, as well as the complexity and specific requirements of the programming task. Let’s take a look at some of the complaints from netizens: Netizen A: Everyone has their own way of programming; this is especially true in small companies. Larger companies use standardized templates, but small companies handle a variety of different projects, making it difficult to standardize anything. Larger companies usually deal with projects related to a specific industry; unless the client requests customizations, these projects can generally be replicated on a large scale. It ultimately depends on the company’s project management system and its philosophy. Netizen B: It depends on what kind of work is involved. I’m used to doing routine tasks like fixing things all the time. It’s really easy to get stuck when starting from scratch. Netizen C: I hate modifying other people’s programs the most. Netizen D: Modifying others’ programs is extremely frustrating – there are thousands of lines of code, and since it’s not within any framework, one has to write it however they want, which is very annoying. In general, people curse every time they encounter this situation. In daily programming, do you think writing code is harder or modifying existing code is harder? Which bizarre programs have been fixed? Feel free to reply and complain! Participation reward: Users who participate in the discussion will receive 10 wealth points, with the top 20 responders eligible for this reward!