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1, Structure Declaration of structure: For example, describe a student: struct Stu { char name[20];//name int age;//Age char sex[5];//Gender char id[20];//Student number }；//Semicolons cannot be lost Special statement: //Anonymous structure type struct { int a; char b; float c; }x; struct { int a; char b; float c; }a[20 ...

1 Introduction to this chapter 2 create a SpringBoot project Change application.properties to application.yml Configure tomcat server: tomcat: uri-encoding: UTF-8 threads: max: 200 min-spare: 30 connection-timeout: 5000ms port: 8080 servlet: context-path: /emos-wx-api Configure data connection pool spr ...

Sword finger offer array topic summary (C + + version)   1. Duplicate number in array All numbers in an array num of length n are in the range of 0 ~ n-1. Some numbers in the array are repeated, but I don't know how many numbers are repeated, or how many times each number is repeated. Find any duplicate number in the array. Idea 1: sort first ...

Strange things WA took two hours Twice as fast as rk2, but the code is four times longer Please think about how to do this problem with dp meaning of the title Now there is a section where people and objects are on top of it, and sometimes there is space. People can move up left and right. Find the minimum of the maximum distance of peopl ...

catalogue Character pointer Pointer array Array pointer Function pointer Function pointer array Pointer to array of function pointers Callback function Character pointer Character pointer: char* int main() { char ch = 'w'; char * pc = &ch;//pc is a variable that points to a character const char* p = "hello bit";//"hell ...

3. Construction of Maven project 3.1 contents of Maven project The structure of the project is as follows: See the following figure for details: 3.2 commands for manually building projects mvn compile #compile mvn clean #eliminate mvn test #test mvn package #pack mvn install #Install to local warehouse Just be familiar ...

prefacevue is simple and easy to use, which is reflected in many places. For example, it has a built-in 32 + modifier, which can be very convenient for us to prevent bubbles, prevent default events, mouse event processing, system keyboard events, etc., so that we can quickly handle business. It's not too convenient!!!After 15 minutes, you can g ...

Scala express syntax (11) | data structure map mapping function The map function returns a new collection Pass the elements of the collection through the functions in () //Create list val list = List(1, 2, 3, 4, 5) //Each element * 2 println(list.map(_ * 2)) flatmap mapping: flat is flattening, flattening and flattening mapping flat ...

The theme of this time is to store data in CSV (or other) file format into MySQL database, and the table structure primary key should be established. Including the processing of date format. Although it's very simple, there are many details and a wide range of knowledge, so write it down. Three tables, as follows articles: issues: sales: i ...

Summary of JUC multithreaded programming JUC: use of java.util.concurrent multithreading Toolkit Test demo:https://gitee.com/aqq/mytest.git 1. Daemon thread There are two kinds of threads in java: user thread and daemon thread Only if the user thread in the current JVM does not end, the daemon thread will work. Only when the last user thre ...