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Node News Saturday, February 10

Node News TLDR / Table of Contents

  • How to prevent your Node.js process from crashing – DailyJS –
    • Interviewing some people for Node.js job positions I found two questions that nobody was answering correctly, and that frightened me: Think about it. Do you know the answers? Are you sure? If not…
    • non-zero exit code, Unhandled promise rejections, Unhandled promise rejection, Node.js job positions, unhandled rejections
  • Nodebooks: Visualising Data the Node.js Way – IBM Watson Data Lab –
    • In this blog, we’re going to add some more npm modules into our notebook and show how you can create your own visualisations using only Node.js code. There are two more Node.js pixiedust_node helper…
    • remote Redis database, redis npm module, pixiedust_node helper functions, Node.js package management, QR codes
  • Develop an iOS Application with Node.js and Cordova
    • JXcore is an open source project that gives you the ability to run Node.js application on mobile devices, including Android and iOS. In this article, I’ll
    • simple iOS application, Apache Cordova, iOS device, Apache Cordova platform, jxcore
  • Pre-Conference Workshop on Node.js and Angular v5
    • chapter, Pre-Conference Workshop, Cli npm install, npm install –g, Chapters Ahmedabad Chapter
  • Install Node.js on Ubuntu 12.10
    • I’m trying install Node.js on my ubuntu 12.10, but the terminal show me an error about lost packages, I was trying with this:
    • sudo apt-get install, apt-get install nodejs, apt-get update sudo, apt-get install npm,

Score: 164.0733377748168
URL: https://medium.com/dailyjs/how-to-prevent-your-node-js-process-from-crashing-5d40247b8ab2
Tweeted At: Sat Feb 10 13:24:29 +0000 2018
Publish Date: 2018-02-07T18:00:54.545000+00:00
Author: Alberto Gimeno

  • In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.There are two important things here:The process doesn’t crash.
  • You can listen to the unhandledRejection event emitted by (reason, promise) = { console.log(‘Unhandled Rejection at:’, reason.stack || reason) // Recommended: send the information to sentry.io // or whatever crash reporting service you use})For promises rejected with an error (e.g. Promise.reject(new Error(‘This is fine’))) this will print both the message…
  • So, it is important to always reject with an error object in order to get a stack trace!You can also listen to the warning event emitted by process and you will get information about unhandled rejections and much more.What happens if you don’t handle the ‘error’ event in a stream?Create an…
  • 💥 Your process exists with a non-zero exit code and this is printed:events.js:137 throw er; // Unhandled ‘error’ event ^Error: ENOENT: no such file or directory, open ‘do-not-exists.
  • Otherwise something like this will kill your process:app.get(‘/foo’, (req, res, next) = { const foo = // …})Simple and nice tic-tac bomb ☝️ waiting to crash your app on a Sunday.Remember:Always handle promise rejections.

Tags: non-zero exit code, Unhandled promise rejections, Unhandled promise rejection, Node.js job positions, unhandled rejections

Score: 73.66312417758283
URL: https://medium.com/ibm-watson-data-lab/nodebooks-visualising-data-the-node-js-way-d6cb7c9d6540
Tweeted At: Fri Feb 09 14:03:48 +0000 2018
Publish Date: 2017-09-21T14:00:54.863000+00:00
Author: Glynn Bird

  • Nodebooks: Visualising Data the Node.js WayGenerating charts in Python notebooks using only Node.js code (part 3)In part one of this series we saw how we could:Use Node.js code inside of Jupyter notebooks by adding pixiedust_nodeUse print and display in JavaScript and Python code to output and visualise dataAdd npm modules into our…
  • Let’s fix that now.Displaying HTML and images in notebook cellsWe can use the html function to render HTML code in a cell:The html function, rendered in a Jupyter Notebook cell.If we have an image we want to render, we can do that with the image function:The image function, rendered in a Jupyter…
  • If you want to fetch real-time information from a remote Redis database, then the redis npm module is there to help:Playing nicely togetherNotebooks are great for experimenting with code in an interactive environment, where you can see code, data, visualisations, and documentation together on the same page.
  • This overall view is useful for:Creating training scripts that guide users through a new API or servicePrototyping code to perfect algorithms, explore the data you are working with, and sketch ideas before diving into the real codeBuilding reports and dashboards that pull data from various sourcesEasily visualising a data set…
  • Adding the power of the Node.js package management system brings a host of libraries into the mix to access, process, and visualise data.Whether you’re using Python or Node.js, I hope the pixiedust_node extension helps you get your ideas out faster.

Tags: remote Redis database, redis npm module, pixiedust_node helper functions, Node.js package management, QR codes

Score: 67.17356043956043
URL: https://modernweb.com/develop-an-ios-application-with-node-js-and-cordova/
Tweeted At: Wed Feb 07 17:30:26 +0000 2018
Publish Date: 2015-03-19T10:30:00+00:00
Author:

  • JXcore is an open source project that gives you the ability to run Node.js application on mobile devices, including Android and iOS.
  • In this article, I’ll show you the process of creating a simple iOS application using the Apache Cordova platform and JXcore plugin.
  • Create a folder for the tutorial and enter the following commands via the terminal: – – Once you have the source code for JXcore, you need to compile it for iOS.
  • First, let’s download it into the project: – – The plugin’s directory also contains a sample folder, so you can copy from there into a subfolder: – – The command below does does this: – – Now you should add the JXcore iOS binaries, which we compiled earlier.
  • Using this method on the UI side is very easy; – – In this tutorial, I’ve tried to share some key points on developing iOS application using JXCore and Node.js with Cordova.

Tags: simple iOS application, Apache Cordova, iOS device, Apache Cordova platform, jxcore

Score: 55.98139302385415
URL: http://www.c-sharpcorner.com/events/pre-conference-workshop-on-node-js-and-angular-v5
Tweeted At: Sat Feb 10 08:27:45 +0000 2018
Publish Date:
Author:

  • On March 11, Join Delhi Chapter Meet for Pre-Conference Workshop on Node.js and Angular v5.
  • “The event is free for everyone who have bought the Annual Conference tickets or will buy the one before the commencement of this chapter meet.”
  • Note: Laptop is required with the following softwares and the internet card – – On March 11, we will cover the following topics, – – Registration starts at 09:30 AM.

Tags: chapter, Pre-Conference Workshop, Cli npm install, npm install –g, Chapters Ahmedabad Chapter

Score: 51.64513274336284
URL: https://stackoverflow.com/questions/16302436/install-node-js-on-ubuntu-12-10
Tweeted At: Sat Feb 10 17:48:00 +0000 2018
Publish Date:
Author:

    Tags: sudo apt-get install, apt-get install nodejs, apt-get update sudo, apt-get install npm,

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