Node js 16 4 2 32 bit

Lines of text. You can process data while still reading the file.A single Buffer object – Same as the first option but now you have a sequence of raw bytes. You need to wait for the read to complete before you can process the data.A stream of buffers -Same as second option but you have a sequence of bytes so you can process data while still reading the file.The first and second options are the most common as files normally contain text data.If the data in the file isn’t text data or not encoded as utf8 then the single utf8 and 1 msg per line options won’t work as with these options the data is read in, and decoded using utf8 into characters.Note: See data encoding tutorial for more detailsThe third and forth options are for when the file contains binary data or text data encoded in another format other than utf8 or ASCII..These options reads the data into you script/flow without any interpretation i.e as raw data.VideoIn the video below I cover the above and also show you how to use Buffers in node-red to read text data from a file.Demo flow used in videoEncoding and Decoding Integers and FloatsWhen working with machines you will often be required to encode and decode integer and float data, modbus is a good example.Early computers used 16 bits to represent an Integer and 32 bits for a floating point number.Today they can be much larger but the process is the same.The image below shows a 16 bit Integer and how it is organised into bytes:It is important to understand that because data is sent across a network in bytes it is important to understand whether the MSB (Most Significant Byte) or the LSB (Least Significant Byte) is transmitted first.This is know as endianness and is discussed in the video.Most networks use Big endianness (MSB first).Video -Node-Red Buffers- (Integers and Floats)Demo flow used in videoWorked Examples:Creating a 2 byte buffer from an Integer (16 bits)First we create an 2 byte empty buffer and then write the integer into itvar buf=Buffer.alloc(2);buf.writeInt16BE(17201);Creating a 4 byte buffer from an Integer (32 bits)First we create an 4 byte empty buffer and then write the integer into itvar buf=Buffer.alloc(4);buf.writeInt32BE(17201);Creating a 16 bit Integer from a 2 byte bufferWe start with our 2 byte buffer containing a 16 bit integer and then we create the integer using the read method.var buf=Buffer.from([0x43,0x6c])var res =buf.readInt16BE()Creating a 4 byte buffer from an Float (32 bits)First we create an 4 byte empty buffer and then write the Float into itvar buf=Buffer.alloc(4);buf.writeFloatBE(131.3)Creating a 32 bit Float from a 4 byte bufferWe start with our 4 byte buffer containing a 32 bit Float and then we create the float using the read method.var buf=Buffer.from([0x43,0x03,0x4c,0xcd])var res =buf.readFloatBE();Related Tutorials and Resourcesw3schools Buffer ObjectHow to Use Node-Red with ModbusWorking with JSON data in Node-redUsing the Node-Red Function Node- Beginners GuideStoring Data in Node-Red Variables

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Query");console.log(results);Example of a binary hamming distance query over BigUint64Array (64 bits processed at a time using pure JS):(Insanely Fast) Query Binary Embeddings Using Hamming Distance Over WebAssembly SIMD (+128 bits at a time, shorter CPU cicles)The WebAssembly SIMD implementation processes 128 bits per iteration (via v128.xor) compared to 64 bits per iteration in the JavaScript implementation using BigUint64Array. This alone gives a theoretical 2x speedup.However SIMD instructions execute XOR, popcount, and similar operations on multiple data lanes in parallel. This reduces the number of CPU cycles required for the same amount of work compared to sequential bitwise operations in JavaScript. SIMD in WebAssembly is likely 2x to 4x faster or more over big vectors.Check haming_distance_simd.wat for the WASM source code. Compiled using wat2wasm.const results = await db.queryBinarySIMD( "Find similar texts based on this query");console.log(results);Example of a binary hamming distance query over WebAssembly SIMD (+128 bits at a time, shorter CPU cicles):The logs show offsets (0, 16, 32), which means the code processes 128 bits (16 bytes) at a time. Since the total vector is 384 bits, it takes 3 steps (384 ÷ 128 = 3), confirming 128-bit SIMD processing.For NextjsIf you're using Next.js, you may need to configure Webpack to work with Transformers.js. Add the following to your next.config.js file: { // Override the default webpack configuration config.resolve.alias = { ...config.resolve.alias, "onnxruntime-node$": false, // Disable onnxruntime-node for browser environments "sharp$": false, // optional - Disable sharp package (used by some image processing packages) }; return config; },"> webpack: (config) => { // Override the default webpack configuration config.resolve.alias = { ...config.resolve.alias, "onnxruntime-node$": false, // Disable onnxruntime-node for browser environments "sharp$": false, // optional - Disable sharp package (used by some image processing packages) }; return config; },ContributingFeel free to fork the repository, create issues, and submit pull requests. We welcome

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In this tutorial, you will learn how to create a simple crud app in VUE JS with node js Express + Rest API + MySQL DB.Here are the steps for a full-stack (Vue.js + Node.js + Express + MySQL) web example with a CRUD application:Build RESTful API with Node js Express + MySQLStep 1- Create Database and TableStep 2 – Install Express, MySQL2, and CorsStep 3 – Connect to DatabaseStep 4 – Create Controller, Model and RouteStep 5 – Update index.jsStep 6 – Start Node JS Express + MySQL AppCreate VUE JS CRUD AppStep 1 – Create New Vue AppStep 2 – Install Axios LibraryStep 3 – Create CRUD ComponentsStep 4 – Update Main.jsStep 5 – Update App.jsStep 6 – Start Vue JS AppBuild RESTful API with Node js Express + MySQLNow, use the following steps to create restFul APIs with node js express and MySQL:Step 1- Create a Database and TableExecute the following command to create a new database for the Node js Express + MySQL app:CREATE DATABASE demo_db;Then execute the following command to create a new table:CREATE TABLE product(product_id INT(11) PRIMARY KEY AUTO_INCREMENT,product_name VARCHAR(200),product_price DOUBLE)ENGINE=INNODB;Step 2 – Install Express, MySQL2, and CorsExecute the following command on cmd to create a directory name “backend“:mkdir backendcd backendnpm init –ynpm install express body-parser mysql2 corsThen add the following code to the “package.json” file:"type": "module",So that the “package.json” file looks like this:{ "name": "backend", "version": "1.0.0", "description": "", "type": "module", "main": "index.js", "scripts": { "test": "echo "Error: no test specified" && exit 1" }, "keywords": [], "author": "", "license": "ISC", "dependencies": { "cors": "^2.8.5", "express": "^4.17.1", "mysql2": "^2.2.5" }}Then create “config”, “controllers”, “models”, and “routes” directories inside the “backend” directory.Step 3 – Connect to DatabaseVisit the “config” directory and create the “database.js” file; Then add the following code into it:import mysql from "mysql2";// create the connection to databaseconst db = mysql.createConnection({ host: 'localhost', user: 'root', password: '', database: 'demo_db'});export default db;Step 4 – Create Controller, Model and RouteCreate Product.js controller file; so visit “controllers” directory and create the “ Product.js” file. Then add the following code into it:// Import function from Product Modelimport { getProducts, getProductById, insertProduct, updateProductById, deleteProductById } from "../models/productModel.js";// Get All Productsexport const showProducts = (req, res) => { getProducts((err, results) => { if (err){ res.send(err); }else{ res.json(results); } });}// Get Single Productexport const showProductById = (req, res) => { getProductById(req.params.id, (err, results) => { if (err){ res.send(err); }else{

IPV6 has been developed to replace IPV4 which is running out of addresses.Although it has been around almost 10 years it is still not widely deployed and supported.However adoption rates are increasing rapidly and IPv6 traffic crossed the 10% threshold in February 2016 (wiki) .For small business/home and home office networks it is likely to be many years before IPV6 becomes an issue.All modern computers and mobile phones support both IPv4 and IPv6, and if you look at your device IP addresses you will probably see both.In this tutorial I want to take a quick look at IPv6 addresses, and how they relate to IPv4 addresses.Therefore it will help if you are already familiar with IPv4 -See IPv4 Addressing and classes for BeginnersIPv6 addressesAn Ipv6 address uses 128 bits as opposed to 32 bits in IPv4.IPv6 addresses are written using hexadecimal, as opposed to dotted decimal in IPv4. See Binary numbers explainedBecause an hexadecimal number uses 4 bits this means that an IPv6 address consists of 32 hexadecimal numbers.These numbers are grouped in 4’s giving 8 groups or blocks. The groups are written with a : (colon) as a separator.group1:group2: ……etc…. :group8Here is an IPv6 address example:Note: Because of the length of IPv6 addresses various shortening techniques are employed.The main technique being to omit repetitive 0’s as shown in the example above.Network And Node AddressesIn IPv4 an address is split into two components a network component and a node component.This was done initially using Address classes and later using subnet masking.In IPv6 we do the same. The first step is to split the address into two parts.The address is split into 2 64 bit segments the top 64 bits is the network part and the lower 64 bits the node part:The upper 64 bits are used for routing.The lower 64 bits identify the address of the interface or node, and is derived from the actual physical or MAC address using IEEE’s Extended Unique Identifier (EUI-64) format. See this Wiki description for exact details.If we look at the upper 64 bits in more detail we can see that it is split into 2 blocks of 48 and 16 bits respectively the lower 16 bits are used for subnets on an internal networks, and are controlled by a network administrator.The upper 48 bits are used for the global network addresses and are for routing over the internet.Address Types and ScopeIPv6 addresses have three types:Global Unicast Address –Scope Internet- routed on InternetUnique Local — Scope Internal Network or VPN internally routable, but Not routed on InternetLink Local – Scope network link- Not Routed internally or externally.Global and Public AddressesGlobal addresses are routable on the internet and start with 2001:These addresses are known as