I. Lazy Loading 1. Core Definition Lazy loading is MyBatis’s optimization mechanism for related queries : when querying the main object, its related objects (such as the one-to-many relationship between users and accounts) are not queried immediately. The SQL execution of the related query is only triggered when the related object is actually used (getter method is called). 2. Core … Read more
This tutorial provides a detailed introduction to data structures in Lua, with a focus on Lua’s unique data structure—Tables—and its various uses. 1. Tables – The only data structure in Lua Tables in Lua are a powerful data structure that can be used to represent various data formats such as arrays, dictionaries, and sets. 1.1 … Read more
1. Create and write to a file Creating and writing files are the most basic file operations. You can open a file in write mode (‘w’) and then use the write method to write content. — Define example file pathlocal testFilePath = “test_file.txt”– Open the file for writing (‘w ‘mode: write mode, overwrite if the … Read more
I. Understanding Django Views A Django view is a Python function that takes a web request and returns a web response. View functions process data received from the user, interact with the model (if needed), and return an HttpResponse object containing HTML content or another type of response. 1. Create a basic view The first … Read more
Webpack 5 is a modern front-end build tool used to bundle resources such as JavaScript, CSS, and images. It improves development efficiency and performance by handling dependencies in a modular fashion. Although Webpack has lost some of its former glory, many projects built with Webpack still require maintenance, making it still worthwhile for front-end developers to … Read more
Bean lifecycle Initialize container In contrast , lazy-loaded containers create objects BeanFactory only on the first invocation .getBean() Parse the configuration and generate BeanDefinition Spring first reads the configuration file (such as XML or annotations), and parses <bean> the definitions in the tags, for example: This information will be encapsulated into BeanDefinition an object that describes the Bean’s metadata, including: property illustrate … Read more
Brief 1) Basic Network Model 2) Model Core Settings (Component Selection) I. A single neuron 1) Structure 2) Significance II. Basic Network Model 1. Multilayer Perceptron (MLP) 2. Convolutional Neural Network (CNN) 3. Recurrent Neural Network (RNN) 4. Transformer III. Extended Network Model 1. Cross-modal and fusion models 2. Graph Neural Networks (GNNs) 3. Reinforce … Read more
Extracting data from a JSON string using MySQL In modern database management, the JSON format is widely used due to its flexibility. However, when data is stored in JSON, we often need to convert it to a more manageable format. This article will demonstrate, through a specific SQL query example, how to extract and reformat … Read more
1. Bean definition conflict 1. MyBatis and Elasticsearch Repository scan path conflict Error message : reason : Solution : II. Dependency Configuration Issues 1. Missing or incompatible dependencies. Error message : reason : Solution : <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-elasticsearch</artifactId> <!– Exclude Netty dependencies that may cause conflicts –> <exclusions> <exclusion> <groupId>io.netty</groupId> <artifactId>netty-all</artifactId> </exclusion> </exclusions></dependency> III. Elasticsearch service connection issues 1. The Elasticsearch … Read more
Basic operations # Initialize repositorygit init# Clone remote repositorygit clone <repo_url># View current statusgit status# Add all modifications to the temporary storage areagit add .# Submit to local warehousegit commit -m “submission common”# View Submission History git log –oneline# View file modification differencesgit diff Branch Management # Create a new branchgit branch <branch_name># switch branchgit … Read more