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        Recently, when the code scanning gun is used in the company's projects, it may encounter the situation that the focus is not in the program. As a keyboard device, the code scanning gun will also output the data where the focus is. It has been found on the Internet for a long time. Basically, there are many hooks, bu ...

C++_STL-unordered_map,unordered_multimap,unordered_set,unordered_multiset reference resources: cplusplus These are written by the zipper method, so they have many similarities together. The following only records the member functions that have not been encountered before You can see if you encounter something unclear C++_STL-map ...

First remember a few nouns Vertex Array Object, VAOVertex Buffer Object, VBOIndex Buffer Objects: Element Buffer Object, EBO or Index Buffer Object, IBO Some conceptual points Everything in OpenGL is in 3D space. Screens and windows are arrays of 2D pixels. Most of OpenGL's work is to change 3D coordinates into 2D pixels that fit on the scre ...

1. Experimental Requirements 1. Goals Implement an interpretive language, Ulanguage, in C, so that it can be executed in the terminal Java and Python are explanatory languages that require an interpreter to interpret execution at execution time - interpret an instruction when you see it (advantages: cross-platform; disadvantages: ineffici ...

Iterator Concepts What's the use of iterators? Why do generic algorithm parameters receive iterators? Iterator iterator is one of the components of C++ STL. It is used to traverse containers and is a general way to traverse container elements. No matter what data structure the container is based on, although the way of traversing elements is ...

Http protocol URL Usually, the "website" we commonly call is actually the URL urlencode and urldecode The urlencode method is to convert any parameter we give into a string suitable for placing in the URL. Specific rules: Letters, numbers and hyphens remain unchanged.Convert spaces to plus signs.All other characters are con ...

Original question link Idea: we think about accessibility. The accessibility of each grid comes from the grid on the left and the grid above. Let's take the first behavior as an example. Why can't all points on the right of the first mine in the first row be reached? Because this mine cuts off all the remaining schemes from the left, and there ...

Chapter 15 object oriented programming of C++ Primer Section 15.7 answers to constructor and copy control exercises Exercise 15.24: what kind of virtual destructor is required? What operations must the virtual destructor perform? [Topic setting ideas] Familiar with virtual destructors. [answer] The class used as a base class should have a ...

preparation To use the C + + development environment in VSCode, you need to download and install: VSCode , just like installing other applications, select the installation path and add environment variable option to continue to the next step until the installation is completed.MinGW , pay attention to x86 during installation_ 64 architect ...

[C + +] Chapter 11: Inheritance 1, Concept of inheritance 1. First acquaintance of inheritance When writing a function with the same name with the same function, C + + syntax creates syntax such as "function overload", "function template" in order to simplify the code. However, if there are many similarities and diffe ...