Programmer cainiao-how to systematically learn and program as an independent developer

If you are in contact with an industry, it is best to have a systematic learning experience in the early stage. You have a complete framework of 1.1 points to thoroughly understand the basics. You cannot have one left and one hoe on the right, with my experience, I will share with you how to systematically study programming and development. The new programmer cainiao paid attention to it, quickly occupied the heights, and quickly added it to favorites.

Generally, it is divided into the following categories:

A. Knowledge in teaching materials

This part of content comes from computer courses. It may also involve some content from other related majors or related courses.

B. Programming Language

Every programmer can engage in development work only when he or she uses a language. Therefore, it is the minimum requirement to learn and master a language.

C. SDK

One language is not enough. A class library or development kit is required for any actual software development. For example, library functions in C language,. netframework class library in C #, and Windows APIs belong to this category. There is a platform for devstore to pay attention to this resource. A lot of SDK Service configuration process evaluations are included and you can simply search for them.

D. Development Tools

In today's cases, no development tool can theoretically develop software, but efficiency is a problem. Therefore, it is also a minimum requirement to master and use a development tool to complete the development task.

E. domain knowledge

There are always users in the software, so when developing the software used by these users, the programmer needs to understand the knowledge of the user's industry and at least need to know some basic necessary knowledge. Another part of the content is also divided into domain knowledge. For example, if you are engaged in the development of software such as Photoshop, you must understand the graphics-related knowledge and be engaged in the development of industrial control software, therefore, you need to understand the control knowledge.

The above classification is my understanding of the knowledge in the development process. It is no problem for a programmer to develop a software after learning the knowledge. The following describes how to learn these knowledge.

I. Learning Teaching Material knowledge

As a programmer who has already worked, I don't think that all the professional courses in computer science (including basic courses, which I also mentioned when I was in college) are useful. In fact, for most programmers, only a few pieces of knowledge is enough. This knowledge mainly consists of three courses: data structure, compilation principle, and operating system. For most programmers, the content of other courses is not useless, but not used in actual work.

The importance of the Data Structure course can be understood as a programmer's Bible. It is too much to describe how it is important. My personal point of view is as follows:

1. Understand all linear data structures, such as tables, stacks, and queues. (generalized tables are not required)

2. Basic operations and use of Binary Trees

3. In the figure, we need to know how to traverse and understand the shortest path algorithm and related concepts.

Of course, this is not enough for some programmers, because specific software development work may have different requirements. However, this knowledge is sufficient for most programmers engaged in MIS software development. There are two requirements for mastering this knowledge. The first is to complete enough exercises so that you can answer questions skillfully. The second is to use data structures to describe the actual things in actual work. It should be said that these two requirements are not too high. Pay attention to more exercises. At present, this course also has a lot of classical teaching materials, and I believe that as long as you finish learning step by step, it will be qualified.

Compilation Principle this course mainly involves learning methods and ideas, rather than the knowledge in the course itself. Because there are too few people who can engage in Compiler development after graduation. There are not many things to understand in this course. My personal views are as follows:

1. determine the use of finite and non-deterministic finite automaton

2. Implementation of lexical analysis programs

3. syntax analysis method

The actual application of automatic machines is equivalent to the state transition diagram. This tool is very important and is expected to be mastered. When developing entitymodelstudio, the interaction part of the design interface is to first design the status transition diagram and then write the code. Otherwise, direct development will face the risk of development being out of control, at the same time, refactoring and maintenance will be quite troublesome. Therefore, this tool is extremely powerful and practical. In addition, the capability of this tool is equivalent to that of a deterministic finite automaton. However, due to its uncertainty, it is more in line with people's natural thinking habits, so it is more convenient in some design scenarios. This is very practical and attractive.

Mastering the implementation of lexical analysis programs can greatly expand development and thinking capabilities. This part may be difficult to describe theoretically, but it is easy to use in actual use, so it is worth learning. The syntax analysis program does not need to be mastered. After all, there is little chance to develop the compiler. However, the related methods and ideas hope to be understood, which can help Programmers think about problems with computers.

The operating system has only two things to master:

1. Five basic management methods, especially memory management policies

2. Synchronization Technology of threads or processes

The operating system is complex, but the management methods described in the textbooks are relatively easy to understand. This difficulty reflects the importance of basic knowledge, which is widely used in actual development. After a good understanding, you can understand the skills for solving complex problems in a simple way. I don't need to say much about the synchronization of thread processes. Everyone knows the role of the process. If you really don't want to know it, I am very willing to believe that your reasons must be sufficient, otherwise, you will never do that.

Finally, I want to emphasize that no matter what you think about this knowledge, you may feel useless, difficult, or not interested. But if you want to be a programmer, so please be sure to master it as much as possible.

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Programmer cainiao-how to systematically learn and program as an independent developer