Programmer Group

preface 1. Operator overloading is a form of C + + polymorphism. 2. Overloading operators can make the code look more natural. Review class During normal class construction, some member methods may not need to be written. For example, in such a class representing time, the copy constructor is only a shallow copy, which is the same as the ...

160 intersecting linked list Given two linked lists, judge whether they intersect at a point, and find the intersection node. The input is two linked lists and the output is one node. If there are no intersecting nodes, an empty node is returned. Input: intersectVal = 8, listA = [4,1,8,4,5], listB = [5,0,1,8,4,5], skipA = 2, skipB = 3 Out ...

11. HighGUI graphical user interface 11.1 creation and use of slider 11.1,1 create slider: createTrackbar() function The createTrackbar function is used to create a slider with adjustable values: int cv::createTrackbar(const cv::String &trackbarname, const cv::String &winname, int *value, int count, cv::TrackbarCallback onChange = ( ...

polymorphic What is polymorphism? Multiple forms and polymorphisms of the same thing in different scenarios can make the interface of functions universal. One of the three characteristics of object-oriented Advantages: clear code organization structure; Strong readability; It is conducive to early and later expansion and maintenance (based o ...

1, WSL initialization Search Linux from the Windows reference store and download Ubuntu (optional 18.04 or 20.04). After downloading, click Install from the start menu and you will be asked to initialize your user name and password. 2, Create root user Subsequent operations require root permission. Ubuntu does not have root user by default and ...

Recently, I started to watch Effective C + +. In order to facilitate future review, I specially took notes. If I misunderstand the knowledge points in the book, please correct!!! Three rules must be observed when designing a good interface: We must consider what kind of errors the user may makeThe interface should be designed consistentlyDon' ...

## Introduction to C + + novice -- 4 C + + storage class C + + storage class: defines the range and life cycle of variables / functions in C + + programs include: autoregisterstaticexternmutablethread_local Didn't look at it in detail C + + operator Arithmetic operator +，-，*，/，%，++，– Relational operator ==，!=，>，<，> ...

Recently, I wanted to be a process manager, because I was learning boost during this time, so I chose boost::process, but after a while I found that the compilation error under VC2010. The reason is that many C++11 grammars are used in process, and 2010 support is incomplete. So, here are the transplant notes. Don't tell me that VC2019 ca ...

Link: E-speed forwarding_ Niuke challenge 48 (nowcoder.com) The given length is n n Sequence of n a a a. Altogether m ...

1. Experimental topic      Graph is a widely used data structure, which is also the focus of this course. It is characterized by nonlinearity. The cross linked list storage structure of sparse matrix is also a storage structure of graph, so they are also included in this practice. This chapter continues to highlight the pro ...