Improvement direction of programming ability

problem

• On the whole , There are many ways to improve the ability of programmers ： Programming ability , communication skills , Management ability, etc ; Subdivision to programming capability , What are the directions for programmers to improve ？

understand

Programming essence - Use

• The national education system has given the answer , There are two subjects in the University ： Theoretical and applied disciplines , for example ： Computer is a theoretical subject , Software engineering is an applied discipline , Application means using ; Programming is the most essential part of software engineering , So the essence of programming is to use .
• Working for many years and understanding ： The essence of a program is that the upper code calls the lower code , The lower level code calls the system interface , The operating system interface calls the driver interface , Drive control hardware ; Of course, it is not a simple call , What is more important is the extension of the same level , for example ： The operating system also implements many extended functions based on the driver interface .

Direction

• Although the essence of programming is to use , But according to the reality , I divide the use into two abilities , as follows ：

1. Research capability
2. Application ability

Research capability

• Turn what you don't understand into what you master , To put it simply, it is possible to achieve .
• The profession that best reflects the research ability ： Algorithm engineer , The bottom Engineer .

Application ability

• Application ability is to use , Simply put, it means being able to do well .
• The occupation that best reflects the application ability ： Architecture and products .

reality

• Real programming is often a combination of two abilities , There are no tasks that require only application capabilities , There is no task but research ability .
• However, due to the different levels of work , It is possible to focus more on one of these abilities , for example ： Internet industry , Because there are fewer things to study , Most of them are ready-made , Therefore, it focuses more on application ability , How to make ready-made things , Do a better job , How to make the network a ready-made thing , Give full play to its maximum value , Therefore, the Internet industry pays more attention to products .

The way of thinking is different between research and application

• If you don't pay much attention to the two abilities at work at ordinary times , May not feel deep , If you focus more on a certain ability in your work , Will be aware of the different ways of thinking , for example ： There is a saying in the Internet field , Don't Reinvent the Wheel , That's right , But there are some hidden limitations , such as ： The Internet , Repetition, etc , Some examples can show the difference in thinking , as follows ：

1. Do embedded in the company Linux project , The company believes that embedded Linux It is no different from embedded Android , So let the Android application manage the project , The whole project follows the Android development method of leaders ：“ Completely reject autonomous implementation , Find ready-made code and framework to use directly from the Internet , In need of change ”, I've been doing embedded linux Of , Some requirements can't find ready-made libraries or frameworks , I will do it myself , So he was criticized by the leaders ： Why write your own code ？ Just use the existing framework , Time saving and labor saving , It's not necessarily someone else's , If you have time, it's good to think about how to do better on the basis of it , Because the demand of small and medium-sized companies is not clear , The demand is put forward step by step , Finally, the leaders found that most of the functions in the embedded field are not ready-made , Otherwise, the product requirements are not met , Otherwise, the framework is too bloated and the performance cannot meet the requirements , Or poor scalability , Apply at the beginning , The modified requirements cannot be used , There is hardly much ready-made , Finally, we can only build our own architecture , Realize it by yourself , Finally, the project failed ,
2. Doing research , Will form a habit , I want to write everything by myself , Forget that you can use an existing framework , for example ： The previous company leaders were from Huawei , Get used to realizing , When I was in the company , All the code is implemented autonomously , even to the extent that json analysis , database , The server is completely written by itself , No third-party framework at all , But there are some problems , Imperfect , Has not been verified by a variety of products , It's easy to have some problems , The project progress is slow , Very heavy workload , There are so many things to master , There is a problem with a library , It may take a long time , wait , Because it was the first company , So I also formed this habit , If there is no ready-made one, we intend to realize it by ourselves , More inclined to achieve autonomously , But because of my limited ability , Many basic modules cannot be implemented , for example ： If I can't do it myself hash Algorithm , I can't use it hash Tables to implement more complex functions , So many of my programming will get stuck after leaving the ready-made library , It was only later that I understood , Why should I implement and use these basic modules , You can directly use online open source , If you are interested in it, you can realize it by yourself , The problem is using , It is impossible to have a simple implementation by yourself as complete and fully verified as the open source library on the Internet , Normally, it should be used only when you confirm that your implementation is better than the existing one .

Applied thinking tendency

1. A more comprehensive and holistic consideration , Instead of focusing on parts
2. Control over all the useful details , Instead of just focusing on what you use .

• The most important embodiment of application ability is the management of complex things , How to implement and manage complex business logic in programming .
• Application ability is also one of the foundations of management ability , Similar to family affairs management , The task is not difficult , But it's complicated , How to manage family affairs in order , It also tests the individual's ability to think and manage as a whole , Some people are in a mess , I think this shows that its application management ability is not good , Being an application programmer is not very suitable .

Study the thinking tendency

1. Focus more on simplification , Less attention to the whole , Pay more attention to a small number of functions that can meet the function implementation .
2. Focus more on parts , It is easy to ignore the whole .