Tag: der

An article to understand the running mechanism of js – event loop

1. Explain the execution mechanism of JavaScript. The execution mechanism of JavaScript is based on the event loop. The event loop includes a task queue (Task Queue) and a microtask queue (Microtask Queue). When a function is called, it is added to the microtask queue. Each iteration of the event loop will first execute all […]

No framework, just use numpy to write a wonderful chapter of DNN (Deep Neural Networks)

1. Overview A Logistics Regression can be thought of as a simple neural network consisting of only one hidden layer (Hidden Layer) (as shown in the figure below). However, Logistic Regression is often very sensitive to outliers, and it is difficult to deal with polyphenols. Therefore, people were inspired by human brain nerves and established […]

Debugging tool under Linux-GDB

GDB 1.What is GDB GDB is a debugging tool provided by the GNU software system community. Together with GCC, it forms a complete development environment. GDB is the standard development environment for Linux and many Unix-like systems. Generally speaking, GDB can mainly provide help in the following four aspects: Start the program and run it […]

“Data Structure, Algorithm and Application C++ Language Description” – Code to implement key-value ordered linked list jump list

Skip list Definition Searching in a dictionary of n number pairs described by an ordered linked list requires at most n key comparisons. If a pointer is added to the middle node of the linked list, the number of comparisons can be reduced to n/2 + 1. At this time, in order to find a […]

How to run js files under windows, how to enable javascript on the computer

This article will talk about how javascript code runs in the browser and how to run js files under windows. I hope it will be helpful to you. Don’t forget to bookmark this site. JavaScript ECMAScript It is a script programming language standardized by Ecma International (formerly the European Computer Manufacturers Association) and established by […]

Docker installation of mysql, redis, rabbitmq, es, nacos under Liunx

1. Environment preparation Note: Ignore if related tools have already been installed. 1Install JAVA operating environment Step 1: Upload or download the installation package cd /usr/local jdk-8u152-linux-x64.tar.gz Step 2: Unzip the installation package tar -zxvf jdk-8u152-linux-x64.tar.gz Step 3: Establish a soft connection ln -s /usr/local/jdk1.8.0_152/ /usr/local/jdk Step 4: Modify environment variables vim /etc/profile export JAVA_HOME=/usr/local/jdk […]

Build a website using wordpress based on IIS under Windows Server

Article directory Preface 1. Components required to build a website in WordPress 2. Component installation and configuration 1. Enable IIS 2. Install and configure php 3. Install and configure MySQL 4. Install and configure wordpress 3. Analysis of error prompts and causes encountered Foreword When I was learning wordpress before, because I was not familiar […]

IDEA integrates Hadoop3.x under Windows

1. Hadoop development package download 1.1 Download the corresponding hadoop development package on the windows system, for example: hadoop3.3.5 version 1.1 Unzip the development package and rename it 2. Patch 2.1 Since it is a windows development system, some patches need to be installed to run normally. Install them in the bin directory of hadoop. […]

Call opencv library programming to display pictures and student ID names under Ubuntu

Article directory 1. Principle of Chinese character dot matrix font library (1), Chinese character encoding 1. Location code 2. Internal code (2) Dot matrix font structure 1. Bitmap font storage 2. 16*16 dot matrix font library 3. 14*14 and 12*12 dot matrix fonts (3). Acquisition of Chinese character lattice 1. Use location code to obtain […]