Rust Getting Started with NEAR blockchain DApp development How to get started with front-end (DApp) and back-end smart contract development on the NEAR blockchain.
Crypto Create an NFT Marketplace - Part 1 The following article provides an initial tutorial on building an NFT marketplace on Ethereum blockchain using React and Next.Js. We will be leveraging React, NextJS, Web3, and OpenZeppelin to create our application. The following article will focus on app development, but here are the libraries for now. Modular Design
Javascript Wrangling Javascript DataFrames using Data-Forge How to use Data-Forge to help you easily itemize your expenses.
Javascript How to capture latitude and longitude from an address using Google Maps API How to use Google Maps GeoCoder API to capture latitude and longitude from an array of addresses.
AWS Deploy an ExpressJS application using Serverless, Express and API Gateway How to deploy a simple ExpressJS application using AWS Lambda, API Gateway, S3 and Cloudformation.
NodeJS Messing around with ES6, Promises and Geo I'm working on a project that requires me to capture latitude, longitude, an array of zip codes, and country information using a single IP address. It thought it might be helpful to share an example of how to do that using ES6. I've written the examples using Class methods and
NodeJS Create CRUD-style apps using AWS Lambda and Serverless Framework How to use an npm-based Serverless framework to build lambda functions on AWS.
NodeJS Troubleshooting Node It doesn't happen often but sometimes your web server will start acting up and you need to solve it using the command line. Here are some common errors I see while using Node or NPM. Common Error #1 The error looks like this. Error: bind EADDRINUSE null: Method 1 If
NodeJS Node: Configure Jupyter to work with Node on a Mac How to configure Jupyter to work with NodeJS on a Mac.
Javascript NodeJS: Creating a Single Page Web App Development Environment Run HTML5 Boilerplate code from a web server within seconds.
Radio Radio: Preparing WAV files for cloud-based radio The team at USC Radio Labs [http://www.uscradiogroup.org/labs] has been working to solve a pretty exciting problem: converting 60k+ audio files from WAV format to something more internet-ready. For context, in the 1990s, many radio stations started moving towards automating their music programming. The benefits were clear:
NodeJS How to install Node on Mac using NVM and Homebrew Install multiple versions of Node and Node Package Manager on a Mac using Node Version Manager (nvm).
NodeJS Using an ORM with NodeJS I've written a lot about building REST API's and a few of my favorite include Rails-only API [https://www.chrisjmendez.com/2016/07/04/rails-5-api-only-app/], ExpressJS [https://www.chrisjmendez.com/2016/01/07/how-to-install-expressjs-4-0-on-a-mac/], Amazon Lambda [https://www.chrisjmendez.com/2017/02/19/aws-lambda-on-osx/], and SailsJS [https://www.quora.com/
NodeJS NodeJS: How to fix localhost Error: listen EADDRINUSE If you're using NodeJS, sometimes you'll get an error like this: Error: listen EADDRINUSE :::5000 at Object.exports._errnoException at exports._exceptionWithHostPort at Server.setupListenHandle [as _listen2] at listenInCluster at Server.listen at Function.app.listen What this error means is that you're trying to bind the app but the
NodeJS Create fake test data using Node I'm working on a tool that enables marketers to upload a CSV file full of mobile numbers and send auto-generated surveys through Twilio. Before working on a CSV file uploader, I needed test data. I'm using Faker [https://www.npmjs.com/package/faker] to create fake data, and CSV stringify
NodeJS NodeJS: Create a Base64 image from a PNG or JPG There are many good reasons for converting images into Base64 including: * Storing an image into a NoSQL database directly. * Serving an image to a client browser through an API. * Sending an image to AWS Rekognition through a POST request. Simple Example var fs = require('fs') function base64_encode(file) { // read
Music Industry How to get a 30s preview from Apple's API How to get 30 second previews of music using Apple's API.
Radio How to publish an Mp3 to Icecast using NodeJS (Part 2 of 2) How to publish an MP3 to Icecast for syndication using NodeJS.
NodeJS AWS: Managing AWS Command Line with Jake Tasks The AWS Command Line [http://docs.aws.amazon.com/cli/latest/reference/iam/attach-role-policy.html] is awesome. The commands are descriptive, well organized and oftentimes easier to use than any of the dashboard consoles. If you're looking or a simple NodeJS tool to help you to script and automate commands,
NodeJS AWS: Lambda development on OS X Through AWS Lambda [https://aws.amazon.com/lambda/], AWS is completely changing the entire web industry, again. If you're not familiar with Lambda, it's a new AWS compute service that manages the AWS resources for us. Said differently, it allows developers to write their applications without having to manage servers.
Javascript Simple Sendgrid Example using Node Here is a very simple example of how to create a simple Sendgrid app using NodeJS. Change directory into your node app. cd /name/of/node/app Install Sendgrid [https://sendgrid.com/] using Node Package Manager. npm i sendgrid Use your Sendgrid username and password to send an email. var
Swift Tools for App Makers In order to build websites, apps or API's, every developer ultimately ends up curating a suite of tools that can help them build products better, cheaper and faster. Below are a few tools that I use all the time. API Development * Postman [https://www.getpostman.com/] - Google Chrome plug-in
Angular How to install Angular with Typescript Here's how to install Angular using Node Package Manager. Step 1 - Angular Install the latest version of Angular. npm install -g @angular/cli@latest Step 2 - Typescript Definitions Install typescript definitions using @types [https://www.npmjs.com/package/@types/npm]. @types unifies the management of definitions and packages
NodeJS AWS: Install a Node app on AWS I normally use Heroku [https://devcenter.heroku.com/articles/getting-started-with-nodejs#introduction] or Openshift [https://www.chrisjmendez.com/2012/04/29/expressjs-app-with-mongodb-on-openshift/] to publish apps but AWS works too. Here's a cheatsheet on how to set-up your NodeJS server from scratch on AWS. This cheatsheet will focus on the development environment
