Programmer Think

Growing up is a process of constant loss. The author is a post-90s. When we were young, our family conditions were poor and the means of entertainment were very poor. Unlike today's children who can play with mobile phones, tablets and computers, at that time, a stack of small raccoon Water Margin cards can play for a whole day. If there ...

catalogue Simple factory Factory method Abstract factory Learning factory mode requires relevant inheritance and polymorphism knowledge such as C + + virtual function and pure virtual function Simple factory In simple factory mode, different instances can be returned according to different parameters.. The simple factory pattern specific ...

This software is applicable to C, C++, C++/CLI, Objective ‑ C, C#, and Java 1, Use process 1. Install software linux: apt install astyle, restart vscode windows: Download the latest version , add the exe PATH to the PATH, and restart vscode 2. Install vscode plug-in Astyle 3. Configuration Use: settings - > extension - > astyle - & ...

Decision tree regressionCore idea: similar inputs will produce similar outputs. For example, predict someone's salary:Age: 1-young, 2-middle-aged, 3-old Education: 1-bachelor, 2-master, 3-doctor Experience: 1-debut, 2-general, 3-veteran, 4-ashes Gender: 1-male, 2-femaleAgeeducationexperienceGender==>salary1111==>6000 (low)2131==>10 ...

@SQL skill improvement MySQL index At present, I'm a junior. I want to be engaged in data warehouse development, but the ability of data development is also particularly high in the market, I also interviewed many small companies and agreed that I didn't have a deeper understanding of the workflow and project expansion of the whole project A ...

1. Introduction to fork functionfork function is a very important function in linux. It can create a new process from an existing process. The new process is a child process and the original process is a parent process.The return value of fork function is as follows: 1. In the parent process, fork returns the PID number of the newly created ch ...

Reference documents: Introduction | Vue js   API documentation: API | Vue.js 1, Global method: Application API | Vue js component: Register or retrieve global components. Registration also automatically sets the name of the component using the given name parameter. config: An object that contains the application configuration. ...

BFS What is BFS BFS is called breadth first search, also called breadth first search. Its alias is BFS, which belongs to a blind search method. Dijkstra single source shortest path algorithm and Prim minimum spanning tree algorithm adopt the idea similar to width first search. The purpose is to systematically expand and check all nodes in ...

linear modelLinear model is one of the simplest models in nature. It describes that the influence of one (or more) independent variable on another dependent variable is in a simple proportional and linear relationship For example:The unit price of housing is 10000 yuan per square meter, 1 million yuan for 100 square meters and 1.2 million yuan ...

catalogue 1, There are two main problems in network programming: 2, Two elements in network programming: 3, Communication element 1: IP and port number 4, Realize TCP network programming Example 1: the client sends information to the server, which displays the information on the console. Example 2: the client sends a file to the server, w ...