Che blockchain

1.

System programming language for building web server, storage cluster or similar huge central server

go is Google's programming language, not the community's. According to the blogger, although go language has a community of contributors, it is not a community project, but a Google project. So as long as it's something Google opposes, no one can add it to the go language

what happened on the go language mole system, a member of Google Go language core team gave up a mole system developed by the external go community because it used a different model. Go language has a community of contributors, but it is not a community project

2. 1. Now business hall cards are in principle need real name system, only in the downstream distributors here can not need ID card
therefore, the business hall is not wrong
2. Mobile phone stores belong to distributors. It can ask you to provide ID card to deal with there, also can omit not to ask
the number with 8 needs to be changed, which is their own rule
3. Mobile phone numbers that don't need ID cards are not a big problem. Pay attention to the package and cost when buying the card.

3. Mr. Ma said that in the past eight years, Chinese houses as a whole have been in a state of sharp rise. In eight years, the cheapest thing in China may be a house. The development of everything has its regular periodicity, including the city, including the real estate market. In the past few years, the real estate market has developed by leaps and bounds. However, with the maturity of the market and a city, it is almost impossible to drive economic growth by selling land and houses. Moreover, it is against the law of nature for houses to rise forever. Even if the house is a special commodity, it is still a commodity. If it is a commodity, it has the law of the market, So the so-called theory of eternal rise is against the laws of economy and philosophy

at this stage, I think many people regret that they didn't buy more houses before. If time could go back to 2005, I would have to buy a house even if I lost all my money. I don't know how many people have such an idea. Because people who don't buy a house feel that they have suffered a great loss, and those who have bought a house have made a lot of money. Now few people believe that the house will become cheaper and cheaper. If they don't buy a house, they will suffer a loss, and if they don't buy a house, they will be stupid. Such arguments are everywhere

in the past few years, the real estate market has developed by leaps and bounds. However, with the maturity of the market and cities, it is not very realistic to rely on selling houses and land to promote economic growth. Don't you see the tough attitude of the government towards the real estate market? This time it's a real game. Although it takes a certain amount of time, no matter what, nothing can be on the rise for a long time. After all, social development is a spiral process

according to the survey, China's post-80s and post-90s have the highest housing ownership rate, reaching 70%. Among the countries richer than China, France, the United States, Canada, the United Kingdom, Australia and Saudi Arabia were 41%, 35%, 34%, 31%, 28% and 26% respectively. That is to say, among the young people in China, 7 out of 10 young people already have a house, which does not include the invisible ones that have not been transferred. It's very different from how we feel. There are only two kinds of explanations. One is that the survey is not accurate, and the samples are too concentrated and not scattered, so the sampling is not true. Another possibility is that some young people, no, many people own more than one house. On average, those without houses also have houses. Which hypothesis is more likely? It goes without saying

Ma Yun said that the house in the future, such as Cong, sounds a bit exaggerated. After all, Cong is only a few dollars. If the house is so cheap, it's OK. In fact, what Ma Yun means is that in the future, houses will be necessities of life. There is a demand, but it is not a compulsion. It will not be the same as now, when buying a house, you need to drain all the money accumulated in your family

Ma Yun said that after 8 years, the house is no longer valuable. Of course, you must not understand it wrong. Worthless is not really worthless, but it will not be like now. The house is a luxury ornament. It is something that you need to struggle to repay the loan for more than 10 years. Even if it is worthless, it is also a house.

4.

Python learning path

the first stage is Python foundation and Linux database. This is the beginning stage of python, and also an important stage to help students lay a good foundation. You need to master Python basic syntax rules and variables, logic control, built-in data structure, file operation, advanced functions, moles, common standard library moles, functions, exception handling, MySQL use, coroutine and other knowledge points

learning objectives: master basic Python syntax and basic programming ability; Master the basic operation commands of Linux, master the advanced content of MySQL, and complete the projects of bank ATM system, English Chinese dictionary, lyrics parser, etc

the second stage is full web stack. In this part, you need to master HTML, CSS, JavaScript, jQuery, bootstrap, web development foundation, Vue, flag views, flag template, database operation, flag configuration and other knowledge

learning objectives: master the web front-end technology content, master the web back-end framework, skillfully use flash, tornado, Django, and complete the data monitoring background project

The third stage is data analysis + artificial intelligence. This part is mainly to learn the knowledge points related to crawler. You need to master the knowledge of data capture, data extraction, data storage, crawler concurrency, dynamic web page capture, scrapy framework, distributed crawler, crawler attack and defense, data structure, algorithm, etc

learning objective: to master crawler, data acquisition, data organization and algorithm advanced and artificial intelligence technology. It can complete crawler attack and defense, image mosaic, movie recommendation system, earthquake prediction, artificial intelligence project and other stage projects

The fourth stage is advanced. This is a python advanced knowledge point. You need to learn project development process, deployment, high concurrency, performance tuning, go language foundation, blockchain introction, etc

learning objectives: master the technology of automatic operation and maintenance and blockchain development, and complete the automatic operation and maintenance projects, blockchain and other projects

according to the python learning roadmap above, you can basically become a qualified Python development engineer. Of course, if you want to quickly become the elite talents of enterprises, you need good teachers to guide you, and you need more projects to accumulate practical experience

self learning itself is very difficult, and learning step by step is sure to be comprehensive and solid. If you want to learn which part, you can skip the targeted learning mole you don't need for the time being, and watch more different videos. The study time is generally 5-6 months

5. Static friction = static with respect to the contact surface. But notice that if the condition is smooth, there is no friction
the way is to see the movement trend of the object relative to the contact surface, where the object is going relative to the contact surface, and the direction of static friction is its opposite direction. If it's a wooden block on a rough slope, the static friction force must go up the slope, because without the static friction force, the wooden block will run down the slope. If you push a box and the box doesn't move, the static friction is the opposite direction of pushing the box. But notice that the motion is relative to the contact surface. Suppose you push the block to the right on a train running at a constant speed to the right, and the block does not move. The block is still subjected to static friction to the left
or do force analysis, analyze the force on the object - gravity, support, thrust or pull, and then judge where it will run but not run, then the friction is the opposite direction of the direction it wants to run.

6. Sweat ~ more and more traffic accidents ~ are caused by these scum ~ suggest you go to complain~

7.

bus line: No.9 → No.14, the whole journey is about 32.0km

1. Walk about 60m from Maiji district to Maiji district government station

2. Take No.9 bus, pass 46 bus stops to Tianshui County Station

3. Take No.14 bus, pass 10 bus stops to lijiatazi station

8. The venue is Li jiataizi, and the road test is on the road of Zaojiao town