Java realizes real-time monitoring of MySQL database changes MySQLBinListener

Directory 1. Export the required classes and interfaces 2. Define the MySQLBinlogListener class 3. Private method to start the reconnection timer 4. Complete code Write a listener for real-time changes to the MySQL database. Why write this listener: In order to monitor and respond to change events in the MySQL database in real time Real-time […]

Two JS handwriting questions a day—manually implement the call, apply, and bind functions in JS

Functions in JavaScript are first-class citizens and can be passed around and used like ordinary variables. This flexibility allows functions to be used in various scenarios, such as invocation of object methods, creation of constructors, and prototypal inheritance. During the use of functions, call, apply, bind are some of the more commonly used methods in […]

(El-button-group) Solve: optimize el-button to realize the use case of button connection and dynamic switching (involving: dynamic binding class)

Ⅰ、Comparison between the components provided by Element-ui and the desired target situation: 1. Element-ui provides components: First, the code provided by Element-ui is (sample code, the example is as follows): // Code provided by Element-ui: <template> <div> <el-button-group> <el-button type=”primary” icon=”el-icon-arrow-left”>Previous page</el-button> <el-button type=”primary”>Next page<i class=”el-icon-arrow-right el-icon–right”></i></el-button> </el-button-group> <el-button-group> <el-button type=”primary” icon=”el-icon-edit”></el-button> <el-button type=”primary” icon=”el-icon-share”></el-button> […]

XGBoost of ML: Based on the Titanic data set (filling/label encoding/reasoning data reprocessing) using the XGBoost algorithm (model export and loading reasoning of json files) to realize the application case of binary classification prediction

XGBoost of ML: Based on the Titanic data set (filling/label encoding/reasoning data reprocessing) using the XGBoost algorithm (model export and loading reasoning of json files) to realize the application case of binary classification prediction Directory Based on the Titanic data set (one-hot encoding/label encoding) using the XGBoost algorithm (model export and loading reasoning of json […]

[Algorithm] Convert to Base -2 negative binary conversion

Article directory Convert to Base -2 negative binary conversion Problem Description: analyze the code Convert to Base -2 negative binary conversion Description of problem: Given an integer n, return the negative binary (base -2) representation of that integer as a binary string. Note that the returned string cannot contain leading zeros unless the string is […]