Author: Community Assistant Original source: https://tidb.net/blog/1ff45c7d Thirty years ago, to write code, programmers had to use complex assembly language. But today, few programmers know how to use assembly language, and simpler high-level languages such as C++, C#, JAVA, Rust, and Go have become the mainstream of development. As the technology wave changes, each generation of […]
Tag: ping
Say goodbye to overlapping labels! The ggrepel package makes graphics more beautiful!
[Speaking Genes in Brief] Elegantly avoid overlapping text or labels on graphics, you can use the ggrepel package. Displaying text on graphics, or labels (which differ from text in that they have a matrix border around the text) are common needs. When drawing with ggplot2, there is a default geometric object geom_text to add text […]
The road to developing a big front end: learn a little MongoDB (1)
Basic knowledge of MongoDB MongoDB is a non-relational database. Compared with traditional relational databases, its data structure is more flexible, more scalable, supports more data types and data operations, and also has better performance and scalability. sex. Understanding the basics of MongoDB can help us better design and optimize data models, improve application performance and […]
C language to implement minesweeping (expand, mark, revoke, judge victory, etc., with source code)
Table of Contents 1. Game ideas 2. Implementation steps 1. Build menu 2. Defining the Minesweeper Zone 3. Board initialization 4. Checkerboard printing 5. Thunder 6. Find Thunder 7. Determine the number of mines around the selected coordinates and expand the mines 8. Mark Ray, Undo Ray 9. Determine win conditions 3. Source code 1.test.c […]
[c language] implementation of minesweeping logic [including extension]~
1. Introduction to the game rules: Minesweeper game, when you select a coordinate, check if there are mines in the surrounding 8 coordinates, the number of mines will be displayed, and if there are no mines, it will expand outward until you check that there are mines in the 8 surrounding coordinates, and the place […]
I heard that you use 6 for ping? Then give me a diagram of how ping works
Directory foreword text 1. The assistant of IP protocol – ICMP protocol 2. Query message type 3. Error message type 4. ping–query the use of message types 5. traceroute – use of error message type Preface In daily life or work, we use the ping command the most to judge whether the network is smooth […]
The SpingBoot project uses @Validated and @Valid parameter verification
1. What is parameter validation? One of the problems we often encounter in back-end development is input parameter verification. Simply put, it is to verify the parameters of a method to see if it meets our requirements. For example, the entry requirement is an amount, and you have no restrictions on the front end. If […]
STM32 port multiplexing (mapping) & interrupt
STM32 port multiplexing (mapping) & amp; interrupt Article directory STM32 port multiplexing (mapping) & amp; interrupt 1 Port multiplexing and remapping 1.1 What is port multiplexing and remapping 1.2 Enable port multiplexing 1.3 Port multiplexing 1.4 Summary: Two, interruption 2.1 Concept of Interrupt Priority Management 2.2 Code part 2.2.1 Set group 2.2.2 Setting Preemption and […]
Camera driver Huaping, split screen, stuck screen, black screen problem analysis
1. Preview blurry screen, split screen, and stuck screen 1. Phenomena Split Screen Huaping Open the smart object recognition app, the bottom sensor output defaults to 1632×1224 (200w) sensor output, which will cause problems such as blurred screen and split screen. But when choosing full-size 3264×2448 (800w) output, there will be no such problem. After […]
Python photo image editing tool – flip, rotate, brightness, skinning, cropping, adding text
Python photo image editing tool – flip, rotate, brightness, skin, crop, add text If you need to install the operating environment or remote debugging, see the personal QQ business card at the bottom of the article, and professional and technical personnel will assist remotely! Foreword This blog writes code for , the code is neat, […]