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Summary A database is used to store data.As long as it's not a toy project, a database is needed for each project.MySQL is still the most used. PostgreSQL Use is also growing rapidly. In Web development, databases are also required.This article describes how to operate a database in Go Language based on MySQL.This article assumes that you alrea ...

Technology blog: https://github.com/yongxinz/tech-blog At the same time, welcome to pay attention to my WeChat public number AlwaysBeta, more wonderful content waiting for you to come. unittest is Python's own unit test framework, which can be used to organize and execute use cases of automated test fra ...

Technology blog: https://github.com/yongxinz/tech-blog At the same time, welcome to pay attention to my WeChat public number AlwaysBeta, more wonderful content waiting for you to come.The calendar module defines the calendar class, which encapsulates the calculation of values, such as the date of the we ...

Technology blog: https://github.com/yongxinz/tech-blog At the same time, welcome to pay attention to my WeChat public number AlwaysBeta, more wonderful content waiting for you to come.datetime contains functions and classes for processing dates and times. Time The time value is represented by the time ...

Publish a k8s deployment video: https://edu.csdn.net/course/detail/26967 Course Content: Various k8s deployment modes.Includes minikube deployment, kubeadm deployment, kubeasz deployment, rancher deployment, k3s deployment.Includes development test environment deployment k8s and production environme ...

Catalog Overview Image size adjustment algorithm How to use controls on Web pages? How to get the uploaded image from the control? source code Reference Overview We have long-term problems with image resizing and cropping. Our problem is that if we resize on the server side, the image qualit ...

I want to "fake" 404 pages in Rails. In PHP, I only send headers with error codes as follows: header("HTTP/1.0 404 Not Found"); How does Rails do this? #1 building The selected answer does not work in Rails 3.1 + because the error handler has been moved to middleware (see github issue ). This is a solution that I am ve ...

Bayesian Theory: Bayesian python implementation: from sklearn.naive_bayes import GaussianNB from sklearn.datasets import load_iris import pandas as pd import numpy as np from sklearn.model_selection import train_test_split iris = load_iris() X_train, X_test, y_train, y_test = train_test_split(iri ...

When using EventBus, we first need to register EventBus: EventBus.getDefault().register(this); So let's use this code as an entry to explore the secrets of EventBus step by step! Let's first look at the getDefault() method: static volatile EventBus defaultInstance; public static EventBus getDefa ...

vue component classification I. Introduction The reason why I wrote this article is that I interviewed dozens of people as an interviewer some time ago. One of the questions is "what are the component classifications of vue? ", it's surprising that most people only answer global components ...