Programmer Group

0. Summary 1. Renderings 　　 The square represents the obstacle, the solid diamond represents the mover (person), and the hollow diamond represents the target position (all can be modified in the code)   2. This example uses queue (linked list implementation) to perform automatic routing with breadth first. 1. Implementation code 1. Queue ...

Preface: there are various ways to save data. The simplest way is to directly save it as a text file, such as TXT, JSON, CSV, etc. in addition, Excel is also a popular storage format. Through this article, you will master how to operate Excel through some third-party libraries (xlrd/xlwt/pandas/openpyxl) to store and read data. This article is ...

Server program specification Linux server programs generally run as background processes (daemons). It does not control the terminal, so it will not accidentally receive user input. The parent process of the daemon is usually the init process (PID 1).A professional log system is required for the debugging and maintenance of the server. L ...

Java design principles & & patterns learning notes explain Recently, the sweeper decided to integrate the design mode learned at the beginning of the year. First, it is used for review and consolidation. Second, he also hopes to encourage his integration with students in need. In the course of learning, the main reference of the sweeper ...

With the increasing complexity of the project, the data interaction of various third-party systems is becoming more and more frequent. It is inevitable to use Web API interface. Here, Web API is a relatively broad concept. This article refers to Web API, especially ASP.NET Web API. With some simple examples, this paper briefly describes the bas ...

Note: the coding tool is CLion+Cygwin64 catalogue Difference from C constant C language C++ Reference and constant reference Exchange two variable values by reference const reference function overloading C language C++ Default parameter Special writing method of invisible parameter variable name Preliminary study on class Boolea ...

2021SC@SDUSC Continue analysis: In the last article AJ report project analysis (4)   In, we focus on the button source code in the corresponding source code of this page. Next, we analyze the column source code after the button: // Table column columns: [ { label: "", field: "id", ...

TCP sticky packet based on Go language Sticky bag example Server: package main import ( "bufio" "fmt" "io" "net" ) func Process2(conn net.Conn) { defer conn.Close() reader := bufio.NewReader(conn) var buf [1024]byte for { n, err := reader.Read(buf[:]) if err == io.EOF { break } if err != nil { fmt.Println("read from clie ...

Chapter 8 aggregation and inheritance Maven's aggregation feature can aggregate and build all modules of the project, while Maven's inheritance feature can help extract the same dependencies and plug-ins and other configurations of each module, simplify POM and promote the consistency of each module configuration. 8.1 mirana-dal mirana DAL modu ...

catalogue preface 2.2.1Vectors(Vector0) Solution: 2.2.2Vectors in more detail(Vector1) A Bit of Practice: Solution: 2.2.3Vector part select(Vector2) Solution: 2.2.4Bitwise operators(Vectorgates) Solution: 2.2.5Four-input gates(Gates4) Solution: 2.2.6Vector concatenation operator(Vector3) A Bit of Practice: Solution: 2.2. ...