What is the difference between a junior programmer and a senior programmer?

Everyone knows that the difference between a low-level programmer and a high-level programmer is that the high-level programmer writes more concisely, and the coding speed is fast, and there are almost no bugs. It is said that the most important thing for low-level programmers and senior programmers is because of the gap in the number of knocks, and the number of senior programmers is more.

The reason why senior programmers are advanced is that they recognize that bugs are inevitable, but they can use logical correctness to ensure that their bugs are reduced, a senior programmer's thinking is clear, and when he writes, there are a series of detailed steps in his mind, that is, he knows what he is doing, and what he writes about what he writes. Of course, after a bug occurs, he will also study the problem in detail, think about the cause and then solve it.

In the previous article, we pointed out to you what mistakes novice programmers will have when they transform into technical masters. And today we have brought you the solutions to these misunderstandings. Shahe Computer Training hopes that everyone can truly understand and become a senior programmer through reading this article.

There are many benefits to doing this, to give a few simple examples:

The requirements analysis is more accurate, and the risks, impacts, and difficulties can be identified at the demand stage.

The problem is handled more quickly, because the relevant business and the first company are familiar with it, and can quickly judge the possible cause of the problem and troubleshoot it.

The design of the scheme is more thoughtful, and because of the understanding of the overall business, a better plan can be designed.

2. Familiar with end-to-end.

For example, if you are responsible for web background development, but in fact, when a user initiates an HTTP request, it takes a lot of intermediate steps to reach your server (such as browser cache, DNS, nginx, etc.), and the server will generally go through a lot of processing to the part you write (routing, permissions, etc.) Many systems or steps in the whole process, most people are impossible to participate in writing, but mastering these knowledge has a great effect on your comprehensive level, such as program design, online fault handling, these more valuable technical work requires a comprehensive technical level.

Systematic", "overall", "comprehensive" these words seem to be relatively empty, but in fact, they are all necessary qualities of technical experts, to achieve such a state, we must be familiar with more systems, business, **.

3. Self-study. Generally in a more mature team, because the framework or components have been encapsulated a lot, the technology used to write the business is indeed relatively small, but we must understand that "the only constant is change", the framework may be improved, the components may be replaced, the existing technology may not be able to meet the business needs, or you change a company, the new company has neither components nor frameworks, and you need to start from the beginning of the quarrel.

These are opportunities and challenges, and opportunities and challenges will only be distributed to those who are prepared, so in this case, we need to learn more things on our own, because there is no time to really wait until we need to use them.

The difference between a low-level programmer and a senior programmer is that a senior programmer can code any function, with fast coding speed and no bugs.

As is traditional, IT training argues that low-level programmers are inferior precisely because they can barely see (or not see at all) things as they appear and not see the essence.

Let's listen to what the high-level program thinks distinguishes itself from the low-level Cheng Ye Shouting Order. Defeated spine acres.

The reason why advanced programmers are advanced is that they recognize that bugs are inevitable and that there are a million reasons why they can cause bugs, but they can guarantee (pursue) that they are watertight in design and logic, and use 100% accuracy of logic to reduce bugs. Yes, rigorous logic is the main reason why senior programmers are distinguished from low-level programmers.

Similar to the martial arts in martial arts, programmers are also divided into internal skills and moves.

Tricks are all kinds of programming skills and programming concepts (frameworks, architectures, etc.) that can be learned through experience. And the internal power is the data structure + algorithm, the move can determine the speed of your work, and in most cases, there is no need for deep internal force (just know addition, subtraction, multiplication and division). And internal strength can determine the height of your problem solving, that is, a thing is difficult to a certain extent, and if the internal strength is not enough, it cannot be solved.

Behavior of a good programmer:

When he arrived at the mission, he began to look up at the starry sky or the high-hanging light rod on the ceiling, like an old monk in his meditation.

Suddenly frowned, suddenly smiled, suddenly danced, suddenly pointed and poked on the paper, suddenly recited words in his mouth, and suddenly felt a little nervous.

On the table are books on the encyclopedia, design patterns, agile practices, etc., and there is no dust.

There are more than 10 categories in the bookmarks section of Chrome or Firefox, and more than 8 are technically related.

I can't tolerate broken windows, and I want to change it when I see other people's rotten **.

You can easily draw a flowchart or timing diagram of the software on the whiteboard.

Have your own frame of mind and go out of your own way of thinking. It's not a step-by-step approach, it's very flexible, and it's rigorous.

Most of the average programmers don't have their own pattern thinking.

See how you allocate your time. After the ordinary-level coder assigns the task, he starts to code the code regardless of 3721, thinking about the code, and then it is the side change, which leads to a demand they repeatedly write and change. This is a typical time-input-output that is too low.

After receiving the task, the god-level coder will think for a long time, and will not do it for a long time, and when they do, it will basically be over once, and at most the bug will be changed during the test. What are the consequences of this difference in allocation time? As we often say, whether the software is maintainable, scalable, efficient, and whether the architecture is reasonable.

These are the points that god-level coders spend so much time thinking about. So then again, what if you are promoted from an ordinary coder to a god-level coder? In fact, there are still a lot of ranks between the two.,Ordinary coder,You can grow into a high-level coder first.,Then an expert-level coder.,Finally, it's a god-level coder.,Of course,The word god is too sacred in my opinion.,So I think few people can become a god-level coder.,For example, the founder of linux, I think it's worthy of the god-level In the process of growing up, you can see more excellent projects for yourself., Think about how others build a good project, from the architecture to the details, read more, think more and summarize more, you will slowly grow, and slowly you will have more goods in your head, you will think more before you do it, there is nothing in your head, but it is not a matter of doing it as soon as you come up.

There is not much to say about the technical distinction between senior programmers and ordinary programmers, because the technical standards of different companies are not uniform, and it is not comprehensive to describe the difference between senior programmers and ordinary programmers purely from a technical point of view. In general, senior programmers and ordinary programmers will have the following differences in their work content:

First, the development content is different. Usually senior programmers tend to do the development tasks of the top-level implementation (design is the task of the architect), and ordinary programmers do the development tasks of the implementation of functional modules.

Typically, a senior programmer will build the entire development framework and then assign specific development tasks to the general programmers in the project team.

Second: different responsibilities. Senior programmers are often responsible for the overall quality and development cycle of the product, and the technical implementation of the entire product usually requires senior programmers to control the whole process.

Ordinary programmers, on the other hand, are often only responsible for the functional modules they develop, and it is enough to be able to deliver tests on time in accordance with the technical standards of the project.

Third: Senior programmers usually have administrative tasks. Usually, the senior programmer in the project team also has some administrative tasks, which is simply responsible for some tasks of the project group, and may also need to bring new people, which is also part of the work of the senior programmer.

On the whole, senior programmer is a relative concept, not an absolute concept, programmers in different companies also have different classification standards, usually there will be a clear level of division, which is also the current common practice in the global software industry, through their own efforts, most programmers will grow into senior programmers after a period of work.

God-level programmers are responsible for formulating programs and solving difficulties, while ordinary programmers are responsible for executing orders.

The main difference is that when dealing with some specific programming work, god-level programmers are able to stand alone, while ordinary programmers can only pick some relatively simple ones, and it is difficult to really pick up the main beam and undertake the research and development of a project.

What is the difference between ordinary programmers and god-level programmersThe main difference between ordinary programmers and god-level programmers is that they deal with some specific programming work, and god-level programmers can take charge on their own. And it's great to be able to do some programming. Ordinary programmers can only be stronger than some relatively simple ones, and it is difficult to really take the lead and undertake the research and development of a project.

Ordinary programmers can only write ordinary ** and maintain programs, while god-level programmers can develop, design, and patch programs.

The main difference between ordinary programmers and god-level programmers is that when dealing with some specific programming work, god-level programmers can take charge of themselves, while ordinary programmers can only pick some relatively simple ones, and it is difficult to really take the lead and undertake the research and development of a project.

The difference between an ordinary programmer and a god-level programmer is that a god-level programmer has a good programming mindset and can think about why he does it from the needs of the product manager. Most of the first reaction of ordinary programmers when they receive new requirements is not to think, but to complain about "why do you need to change the requirements, does he understand the product", and then in the indignation, he knocks on the **, changes the bug, continues to knock on the **, continues to change the bug, and falls into an endless cycle. In the end, people who don't have programming thinking, no matter how much they knock on the **, can only be an ordinary programmer.

Moreover, god-level programmers have a sense of active learning and lifelong learning, while programmers no longer take the initiative to learn after working, and their technical level will stay in the first few months of joining the company.

After receiving the new requirements of the product, the first reaction of ordinary IT programmers is not to think, but to complain and complain about "why do you have to change the requirements again, and what are so many problems every day", and then knock on the ** and change the bug. They don't think about what the reasons behind the change requirements are, they don't have programming thinking, they don't reflect on the summary problem, so in the end they are still ordinary IT programmers.

Senior IT programmers often think about why they need to change the requirements after receiving the requirements, what is the significance of the implementation of this requirement, and how to better realize this requirement.

What is the difference between an ordinary programmer and a god-level programmer? The main difference between ordinary programmers and god-level programmers is that when dealing with some specific programming work, god-level programmers can take charge of themselves, while ordinary programmers can only pick some relatively simple ones, and it is difficult to really take the lead and undertake the research and development of a project.

In fact, let's put it this way, ordinary programmers are like the difference between kindergarten and college students, they are not only different from academic qualifications, but also about the understanding and technology of the program, senior programmers can be called hackers, and ordinary programmers are just a simple understanding of the program.

Hello, ordinary programmers can only do some repetitive and simple things, god-level programmers can solve problems that ordinary programmers can't solve, and they can also build frameworks for ordinary programmers.

God-level programmers can solve many problems that ordinary programmers can't solve, and god-level programmers often have more algorithms and tricks on the basis of ordinary programmers' difficulty in solving problems.

There is basically no one in the god-level programmer company who dares to mess with it, killing the audience in minutes, thinking ability, and first-class ability are impeccable, and the last confidence is the one who encounters a problem. Ordinary programmers basically copy and paste most of the time, that is, move bricks.

Ordinary programmers.

1. The knowledge system is scattered, there is no systematic thinking, there is no engineering literacy when writing and correcting bugs, and the east wall is often demolished to make up the west wall.

In fact, when faced with an unknown problem, how to locate the core problem under complex conditions, how to analyze the potential cause of the problem, how to eliminate interference and restore a minimum verifiable scenario, and how to grasp the key data to verify their guesses and experiments are the best scenarios to reflect the thinking power of programmers.

2. The dependence on a certain language is too strong, and the knowledge cannot be transferred well, and once the language is changed, or the field is different, it will be overwhelming.

Senior programmer.

1. The knowledge system is complete, there is systematic thinking, even if it is not at the level of an architect, you can think and grasp it as a whole when writing ** and changing bugs.

2. Strong learning ability, with its own mental model, knowledge can be freely transferred, and can efficiently cut into different fields and languages.

3. Have real experience, not just to do enough projects, but to face the unknown and solve problems.