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Reference Textbook: Proficiency in C++ (9th Edition) Recursive function: a self-calling function Functions can also call themselves Example: #include<iostream> void message(int times) { if (times > 0) std::cout << "You are pretty beaut ...

1. Brief Answer Questions (1) Explain the differences and connections between Game Objects and Assets. Game object is a real object in the game, which can be selected and operated, while resources are a modification of the game object, such as a cu ...

inherit What is inheritance? A derived class inherits the fields and methods of the base class. A class can be inherited by more than one class; in python, a class can inherit more than one class. Parents can be called base classes and superclasses, while subclasses can be called derived classes. There are two kinds of inheritance: single in ...

Preface J.U.C is the abbreviation of java package java.util.concurrent, short for concurrent package in Chinese. It is a new basic api for writing concurrency related in jdk1.5. Java practitioners must be familiar with, at the same time, in the traffic age, concurrent packages have become a must-ask part of senior development interviews. This a ...

Preface Before that, we introduced the installation of RabbitMQ, the comparison of major message middleware, the core concept of AMQP, the use of management console, and the Quick Start RabbitMQ. This chapter introduces the advanced features of RabbitMQ. It is introduced in two parts (top/bottom). How can messages be delivered 100% successfu ...

Preface refresh is the core method of ApplicationContext, if you do this method, the ApplicationContext is all done. public void refresh() throws BeansException, IllegalStateException { synchronized (this.startupShutdownMonitor) { prepareRefresh(); ConfigurableListableBeanFactory beanFactory = obtainFreshBeanFactory(); prepareBe ...

data structure Deep List function There are many ways to list data types, as shown in the following table list.append(x) Add an item at the end. It's equivalent to a [len (a):]= [x].   list.extend(iterable) Expand the list through all items in the traversal. Equivalent to a[len(a):] = iterable.   list.i ...

At the bottom level, Java data is manipulated by using operators. 3.1 Simpler Print Statements Static can be inserted into import to achieve static import, but it is generally not used. 3.2 Use java operators Operator scoped operands generate ...

Preface Language: Java Environment: IntelliJ IDEA JDK Version: 1.8 Source code: GitHub Definition of queue Queue is a special linear table. It only allows deletion at the front of the table, but insertion at the back of the table. Like stack, queue is a restricted linear table. The end of the insertion operation is called the end of the que ...

Write spiders crawler files to cycle through the contents Request() method, which adds the specified url address to the downloader download page with two required parameters,Parameters:　　url='url'callback=page handleryield Request() is required for use The parse.urljoin() method, which is under the urllib library, is an automatic url splicin ...