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Node News Tuesday, February 20

Node News TLDR / Table of Contents

  • Speed up Your Node.js App with Native Addons – Node.js Collection –
    • JavaScript is a ridiculously fast scripting language. But how fast is JavaScript compared to C++? Let’s look at this example that computes prime numbers in Node with JavaScript and with a native C++…
    • prime numbers, C++, JavaScript, small prime numbers, native addon
  • Reactive programming and Observable sequences with RxJS in Node.js
    • Dealing with asynchronous non-blocking processing has always been the norm in the JavaScript world, and now is becoming very popular in many other contexts. The benefits are clear: an efficient use…
    • file, asynchronous non-blocking processing, fileName, data, case
  • Node.js Top 10 Articles for the Past Month (v.Feb 2018)
    • For the past month, we ranked nearly 900 Node.js articles to pick the Top 10 stories that can help advance your career (0.9% chance).
    • best daily articles, Mybridge AI, total number, competitive list, Node.js articles
  • Basic Templating Using Node.js And Express
    • Previously we learned about how to simply start up with nodejs & implement package manager. Below link you can have an overview on startup NodeJS.
    • layout page, Angular UI, HTML page, basic single page, sample template
  • bnb/awesome-awesome-nodejs
    • awesome-awesome-nodejs – 🐢🚀 An Awesome list of Awesome lists related to Node.js.
    • awesome list, awesome list thing, core awesome list, Node.js GitHub organization, official Node.js website
  • You Got This! Zine
    • Learn to make web apps with Node.js with our free 20-page zine
    • web apps, 20-page zine, example apps, coding club, web app
  • Computing the first 50 prime numbers with warmup.If we warm up TurboFan and then start computing prime numbers, JavaScript is faster on the first 25 prime numbers, because calling into C++ comes with a small performance overhead.
  • Always measure performance, dont blindly make changes because somebody said C++ is faster than JavaScript.Index.js that runs prime number computations in JavaScript and C++ side by side.We could easily improve the algorithm.
  • Method converts the first argument to a number, calls the C++ function prime with that number, and returns the result as a JavaScript value.
  • If you have a similar workload (computation heavy, few jumps between C++ and JavaScript) and its performance is critical, you might want to consider writing a nativeaddon.Running JavaScript without OptimizationsJavaScript is almost as fast as C++ for tasks like this prime number calculation.
  • Computing prime numbers without adaptive optimizations.In the prime number example, JavaScript without optimizations is 10 times slower than C++, not only 0.5 times.

Tags: prime numbers, C++, JavaScript, small prime numbers, native addon

  • Reading, transforming, writing one file and updating the log in Node.js looks something like this: – import * as fs from ‘fs’; // Node module to access file systemconst fileName = callback(err, data) = { – const newContent = transform(data); – const newFileName = newFileName(fileName); // calculate new name -…
  • Assuming we can access functions that perform read and write operations on file and return a Promise, then our code would look like: – const fileName = = { – const newContent = transform(data); – const newFileName = newFileName(fileName); // build the new name – return writeFilePromise(newFileName, = appendFile(‘log.txt’, =…
  • == null) return reject(err); – resolve(data); – }); – }); – }Processing manyfilesIf we return to the original use case, where we have to transform all the files contained in a Directory, the complexity increases and Promises start showing some limits.
  • Read all the file names contained in a DirectoryLets assume we have access to a function which receives as input the name of a directory and returns an Observable which emits the list of file names of the directory once the directory tree structure has been string) : ObservableArraystringWe can…
  • Again, we assume that were able to access a function that emits as soon as the write operation is completed, and the data emitted is the name of the file string, content: Buffer) : ObservablestringIn this case, we have different write-file Observables, returned by the writeFileObservable function, which emits independently….

Tags: file, asynchronous non-blocking processing, fileName, data, case

  • Node.js Top 10 Articles for the Past Month (v.Feb2018)For the past month, we ranked nearly 900 Node.js articles to pick the Top 10 stories that can help advance your career (0.9% chance).
  • Topics in this list: Microservice, Face Recognition, Full-text Search, Performance Benchmark, Serverless REST API, Twitter Bot, NestJS, BufferJavaScript, Vue.js, React are published separately in the publication.Node.js Open Source Projects of the Year v.2018: HereWatch Node.js Monthly Top 10 on Github and get email once a month.As an article ranking service…
  • Mybridge AI considers the total number of shares, minutes read, and uses our machine learning algorithm to rank articles.
  • This is a competitive list and youll find the experience and techniques shared by the Node.js leaders useful.
  • The Death of Microservice Madness in 2018.

Tags: best daily articles, Mybridge AI, total number, competitive list, Node.js articles

  • Copy the below code snippet and paste it the to newly created HTML page.
  • We also need to add the references of the controller in our layout page.
  • In this portion, we are going to implement a sample template to our application, Then, we will partially call the views to render in the layout page.
  • Next, we will create the views to render those sections in layout page.
  • You can see the partial call in layout page from the below screenshot.

Tags: layout page, Angular UI, HTML page, basic single page, sample template

  • If you’d like to add an awesome list to that’s related to Node.js, be sure to read the contribution guidelines and then make your change and open a pull request!
  • Know of an awesome list that would fit in this section?
  • Know of an awesome list that would fit in this section?
  • Know of an awesome list that would fit in this section?
  • Know of an awesome list that would fit in this section?

Tags: awesome list, awesome list thing, core awesome list, Node.js GitHub organization, official Node.js website

  • Glitch is the friendly community where you’ll build the app of your dreams.
  • With working example apps to remix, a code editor to modify them, instant hosting and deployment – anybody can build a web app on Glitch, for free.

Tags: web apps, 20-page zine, example apps, coding club, web app

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