Programmer Group

1, Redis common commands Redis is generally installed on linux, which is divided into server and client. Start Redis server Enter the following command on the terminal to start the Redis server: $redis-server Start Redis client Enter the following command on the terminal to start Redis client: #If the password is set, use the follow ...

1, What is a vector? A Vector is a Sequence container that encapsulates a dynamic size array. Like any other type of container, it can hold various types of objects. It can be simply considered that a Vector is a dynamic array that can store any type. 2, Container characteristics 1. Sequence The elements in the order container are sorted ...

Here we mainly introduce the operations of install ing using cmake: The content that can be installed through cmake can include target binary, dynamic library, static library, files, directories, scripts, etc., which are briefly described below: For details, please refer to the official website. Here is a brief description 1. Installation of ...

[purpose]      Write and debug a process scheduler in high-level language to deepen the understanding of process concept and process scheduling algorithm [experimental equipment and software] Experimental running environment: C language programming environment      Preparations before boarding include ...

preface 1. Pointer is a variable used to store address. The address uniquely identifies a piece of memory space. 2. The size of the pointer is fixed 4 / 8 bytes (32-bit operating system / 64 bit operating system). 3. Pointers are typed. The type of pointer determines the step size of ± integer and the permission of operation memor ...

preface Digital image processing c++ opencv (VS2019 opencv4.53) is continuously updated 1, Homomorphic filtering principle 1. Treatment principle (1) It is considered that the image f(x,y) consists of two parts: illumination component i(x,y), reflection component r(x,y): f ...

Competitive conditions One of the most common errors in concurrent code is race condition. The most common is data race. On the whole, the problem of sharing data between all threads is caused by modifying data. If all shared data are read-only, there will be no problem. But this is impossible. Most of the shared data needs to be modified. Th ...

Greedy Algorithm The simple understanding is to ensure the local optimization, the local results are irrelevant, and the results are the simple summation of the local optimal results to achieve the global optimization. assignment problem 455. Distribute cookies [Assign Cookies (Easy)] Title Description Suppose you are a great par ...

1. The origin of C + + For complex problems, large-scale programs that require a high degree of abstraction and modeling, C language is not appropriate. In order to solve the software crisis, in the 1980s, the computer community put forward the idea of OOP (object-oriented programming), and the object-oriented programming language cam ...

edge detection 1, Understanding of edge detection Edge generally refers to the region where the intensity of an image changes sharply in a certain part. There are generally two situations of strength change: Step change: The image value changes from low to high, and the image changes from dark to bright Peak change: From dark to light ...