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 […]
Tag: bin
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 […]
IT company’s auspicious “tree” binary tree – (heap) C language creation
Directory Preface 1. Tree concept and structure ?basic concept ?Proper noun for tree ? tree representation Child brother notation 2. Concept and structure of binary tree ?concept A binary tree in reality (also known as the mascot of an IT company) ?Special binary tree ?Properties of Binary Trees ?Storage structure of binary tree sequential storage […]
(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> […]
Complete binary tree – the concept and implementation of heap
Foreword Heap (heap): It is the abbreviation of heap memory. The heap is dynamically allocated memory. The memory size is not fixed and will not be released automatically. The heap-the data structure is an unordered tree structure, and it also satisfies the key-value How to store key-value pairs. 1. The concept and structure of the […]
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 […]
Balanced binary tree operation based on C language (including complete code)
Definition of balanced binary tree: In order to prevent the height of the tree from growing too fast and reduce the performance of the binary sorting tree, it is stipulated that when inserting and deleting binary tree nodes, the absolute value of the height difference between the left and right subtrees of any node must […]
Tree & Binary Tree & Simulation Implementation & Algorithm Structure
1. Definition of tree: A tree is a non-linear data structure, which is a set of hierarchical relationships composed of n finite nodes. * There is a special node, which becomes the root node, and the root node has no predecessor nodes *Except the root node, other nodes are divided into M mutually disjoint sets […]
Codeforces 1832 E Combinatorics Problem Analysis [difficulty 2200]
Article directory Subject address topic abstract topic type problem solving ideas the code Subject URL https://codeforces.com/problemset/problem/1832/E Abstract topic give n, a 1 a_1 a1?, x, y, m, k are six integers, and the following 4 steps are required according to a i = ( a i ? 1 ? x + the y ) % […]