Unity controls ray detection to destroy objects

Installation and configuration of development environment unity2021 Link: https://unity.cn/ vs2022 Link: https://visualstudio.microsoft.com/zh-hans/ Game scene construction Scene construction creates four 3D objects Cube, Sphere, Cylinder, and Capsule Material production and scene improvement Set the four 3D objects Cube, Sphere, Cylinder and Capsule as prefabs and place them in the Resources/Prefabs folder Use the Text in Unity’s […]

Insert at the end of a singly linked list, find the middle node of a singly linked list, delete specified elements of a singly linked list, invert a singly linked list, find the Kth node from the bottom of a singly linked list, detect whether a singly linked list is a palindrome structure, find the intersection point of two singly linked lists, and judge a singly linked list. Whether the linked list has a ring and whether the singly linked list is destroyed

//Singly linked list node definition, tail insertion and output #include<iostream> #include<malloc.h> #include<assert.h> using namespace std; typedef struct listNode { struct listNode* next; int data; }node; //Divided into two situations, the linked list is empty and the linked list is not empty void lastInsert(node** list,int da) { node* n = (node*)malloc(sizeof(node)); n->data = da; n->next = […]

“ArrayList” and “LinkedList” that destroy the three concepts, the efficiency issues of ArrayList and LinkedList!

Article directory Introducing ArrayList and LinkedList Where is the destruction of the three views? reason Try it yourself and compare Query efficiency 1. Million-level data volume, write test methods. 2. Five million data volume, write test methods 3. Tens of millions of data volumes, writing test methods Addition and deletion efficiency Increase elemental efficiency 1. […]

C++ Elementary Grammar – new, delete create/destroy dynamic memory space

Preface: In C language, there are malloc, realloc, calloc to open up dynamic memory space, and free to destroy dynamic memory space. In C++, use new to open up dynamic memory space, and delete to destroy dynamic memory space. It not only simplifies the operation, but more importantly, solves the initialization problem of custom types. […]

Windows hook protects its own process from being destroyed

The code comes from the author of “Windows Core Programming”: APIHOOK.h header file: #pragma once #include <Windows.h> class CAPIHOOK { public: CAPIHOOK(LPTSTR lpszModName, LPSTR pszFuncName, PROC pfnHook, BOOL bExcludeAPIHookMod = TRUE); ~CAPIHOOK(void); private: static void ReplaceIATEntryInOneMod(LPCTSTR pszExportMod, PROC pfnCurrent, PROC pfnNewFunc, HMODULE hModCaller); static void ReplaceIATEntryInAllMods(LPCTSTR pszExportMod, PROC pfnCurrent, PROC pfnNewFunc, BOOL bExcludeAPIHookMod); //Prevent dynamic […]

How Tomcat destroys Java’s parental delegation model

Java’s Parental Delegation Model Three-layer class loader for JDK8 and previous versions Bootstrap Class Loader Realized by C++ language, HotSpot is a part of the virtual machine itself. This class loader is responsible for loading files stored in the \lib directory, or in the path specified by the -Xbootclasspath parameter, and is recognized by the […]

What happens in the virtual machine when you create a HashMap object and use its put and get methods, and when the HashMap is destroyed.

What happens in the virtual machine when you create a HashMap object and use its put and get methods, and when the HashMap is destroyed. Suppose your Java source code is like this: import java.util.HashMap; public class Test { public static void main(String[] args) { // Create a HashMap object HashMap<String, Integer> map = new […]

C++ binary tree (create, destroy, pre-middle and post-order traversal and hierarchical traversal, find parent nodes, etc.)

(1)Structure and class definition struct BTreeNode { T data; BTreeNode* left, * right; BTreeNode() : data(0), left(nullptr), right(nullptr) {} BTreeNode(T val, BTreeNode<T>* leftChild = nullptr, BTreeNode<T>* rightChild = nullptr) :data(val), left(leftChild), right(rightChild) {} }; template<class T> class BTree { public: BTree() :root(nullptr) {} // constructor BTree(string str); // overload void createTree(BTreeNode<T>* & amp; bt, string […]

Spring Framework Bean initialization and destruction — method: @Bean(initMethod = “init”, destroyMethod = “destroy”)

Initialization and destruction of Spring Framework Bean – method: @Bean(initMethod = “init”,destroyMethod = “destroy”) Bean initialization The initialization of beans in the Spring framework is divided into the following types Talking about beans must talk about life cycle Bean life cycle The name cycle of a bean in the usual sense refers to the process […]