Programmer Think

Java basics 02 5. Basic grammar (Part 2) 5.1 procedure flow control Process control statements are statements used to control the execution order of statements in the program. Statements can be combined into small logic modules that can complete certain functions. Its process control mode adopts three basic process structures specified ...

Lidar series articles Sensor fusion is to fuse the data collected by multiple sensors to better perceive the surrounding environment; Firstly, the related contents of lidar are introduced, including the basic introduction of lidar (this section), laser point cloud data processing methods (point cloud data display, point cloud segmentation, poi ...

[quick reference manual of Linux common commands] pay attention to [entry station], and the background replies to "1001" for self access.Vmstat is the abbreviation of virtual memory statistics, which can monitor the virtual memory, process and CPU activity of the operating system. He makes statistics on the overall situation of the sy ...

Python learning (I) variables Since the postgraduate study mainly uses Python and C + +, and has been busy with graduation design recently, the learning and sorting of Java language is the first step, and the next step is to complete the study of Python. In fact, most of the language specifications are interlinked. They are written here fo ...

1, Network communication and service Network communication is the basic service of MySQL, including other related services derived from it, which constitutes the main way for MySQL client and server to complete interaction. The main functions include: 1. Network initialization and service initialization: including parameters, server and listen ...

summary   as a trainee who has studied for less than a year, I took part in the national competition for the first time this year. I thought the title would be gentle, but I only made one pwn question in the end. Originally, there were two pwn questions, but I still lacked some knowledge or skills. I didn't do it, and then it was over ...

Blogger in the last article Extracting text relations and creating knowledge map with ltp (based on neo4j) (I) In this paper, the single sentence is analyzed with LTP, the semantic dependency is extracted, and the map is created on neo4j website with python. This chapter is an extension of the previous article. The overall code is similar. This ...

1, Interface document address Obtain applet code, which is applicable to business scenarios with a large number of codes. The small program code generated through this interface is permanently valid, and the number is unlimited. Address navigation: wechat official document - > applet - > server - > applet code - > getunli ...

  Linux kernel primitive (IX) -- mutex Wolf@ http://blog.csdn.net/xiaolangyangyang   Mutex is a sleep lock. It is a simple sleep lock. Its behavior is similar to that of a semaphore with count of 1. (for semaphore reference: Linux kernel primitive (8) -- semaphore). Mutexes are simple and efficient, but they have more restrictions than s ...

Before forecasting the time series, we need to carry out a series of tests on the data, mainly to test the stability and randomness of the data (white noise test). This paper mainly introduces ADF test and Ljung box test ADF test ADF test, i.e. unit root test, refers to whether there is a unit root in the test series, because the existence ...