Do you find the content on The Polyglot Developer valuable? What if I told you that you could contribute valuable content to other developers as well? I wanted to let you know that I’m currently accepting original guest content, from talented developers like yourself, on a variety of awesome topics....

I was recently at NativeScript Developer Days 2017 and I was anxious to learn more about Telerik’s new developer tool called NativeScript Sidekick. I had heard about Sidekick prior to the conference, but I never had the chance to see it in action. After seeing Sidekick in action, I must say, it is w...

I was recently attending NativeScript Developer Day 2017 in New York City, which is Telerik’s very own NativeScript conference. This was a fantastic conference where I was not only a participant, but also a speaker at the event. At this event I had given a fresh presentation titled, Native to Hybrid...

So you’ve spent time creating an awesome mobile application, but how do you know how it is performing in each of the available app stores? How can you gauge the user interactions with your application to better improve what you’ve built? The easiest way, and in my opinion the best way, would be to i...

Back in 2014 I started The Polyglot Developer on WordPress with the intention of documenting what I learn and helping others in the process. However, back then, it was not called The Polyglot Developer, but instead Nic Raboy’s Code Blog. The blog was later rebranded in early 2016, but the look and f...

I’ve been developing web applications for as long as I can remember and there are certain repetitive tasks that I do between the development and deployment of each final product. For example, current web standards demand that web resources like CSS, and JavaScript be minified or images be compressed...

When building an application, regardless if it is mobile, web, or neither, it is a good idea to come up with a collection of tests that can be used in a continuous integration scenario. I must admit, I don’t have the best habits when it comes to writing tests, but I’m sure my applications would be s...

With every version of Android comes more security measures dropped into place. For example, in Android 6+ the user needs to grant permissions when doing certain activities, such as using the camera. These security measures are more aggressive than the previous form of asking permissions in the manif...

I am pleased to announce that the latest episode of The Polyglot Developer Podcast is now available to download from all the popular podcasting networks. In this episode titled, Authorizing Access with OAuth, I’m joined by Ryan Chenkie from Auth0 to talk about OAuth and how it can be used to authori...

When developing mobile applications, there is often a need to perform certain tasks when a network connection is available. Not only this, but sometimes you only want to perform tasks depending on the type of network connection. For example, what if you wanted to backup large photos only when the An...

I am a huge fan of the Go programming language and have written a decent amount of material on the subject. For example, a popular tutorial I wrote titled, Create a Simple RESTful API with Golang, focuses on developing an API. However, I recently received questions on the subject of consuming data f...

More than a year ago, before I started using Angular, I had written a tutorial on the topic of fingerprint authentication in a core NativeScript application. Since then, I’m doing almost all of my mobile development with Angular which means that the previous article deserves an upgrade. I recently r...

If you’ve been keeping up with my content since the birth of The Polyglot Developer, you’ll know that I was once a huge advocate of Apache Cordova development using frameworks like Ionic Framework. Having been a web developer and coming from native Android development with Java, cross-platform devel...

A while back I wrote a tutorial that demonstrated how to use local notifications in a NativeScript Core project, also referred to as a vanilla NativeScript project. Since writing that tutorial I had received several requests to demonstrate the same in a NativeScript with Angular project. If you’re u...

Most, not all, mobile applications have some sense of users having accounts. This means that users need to register and sign into most mobile applications to get all the features the application has to offer. So how do you create an attractive and functional login and registration screen for your An...

Anyone that operates a website or web application with a contact page knows how bad the SPAM problem on the internet is. Spammers, phishers, and other malicious people create bots that will crawl search engines for contact forms and send emails to the hosts, register accounts, or something else. The...

I am pleased to announce that the latest episode of The Polyglot Developer Podcast is now available to download from all the popular podcasting networks. In this episode titled, Object Storage for Application Developers, I’m joined by Krishna Srinivas from Minio to talk about what object storage is ...

I’ve been developing with NativeScript for a few years now, but only recently have I started working with the various services offered by Google Play. Using a single Google Play service such as Google Analytics works great, but as soon as you start adding more, you’ll start noticing Android conflict...

Not too long ago I wrote a guest post regarding push notifications with the Firebase Cloud Messaging (FCM) service at the Telerik Developer Network. While that previous article was directly related to using FCM within a NativeScript application, it followed all the same rules that are required for a...

As some of you might know, before I started developing cross platform mobile applications using Ionic Framework and NativeScript, I was developing Android applications using nothing more than the Android SDK and Java. I still have one of my first applications, SQLTool, for sale in Google Play, and i...

If you’re like me, when it comes to Docker, you probably build images non-stop. I must admit that when I create images, I don’t create any special tags, even though I should. Instead every build uses the latest tag because that is enough to meet my needs. Regardless of what tags you use, you may fin...

When it comes to authenticating users for making use of your API, it is a good idea to add an extra step beyond standard username and password. This is called two-factor authentication (2FA) and it acts as a second layer of security for users making use of your application. Not too long ago I had wr...

A few months back I wrote about using websockets in a Golang application for communication with an Angular client web application. While very useful and simplistic, in many cases websockets won’t be the means for real-time communication between applications. It is often easier or better to use stand...

When creating a web application that accepts user input, it is often a good idea to validate anything the user provides. While you should always validate this information via some backend server-side code, it often provides a good user experience to validate via the frontend as well. By doing form v...

Back when I was first learning about Docker, I had tried to use it on one of my Raspberry Pi devices. This was when Docker had first become available officially for Raspbian. When I was playing around with Docker and my Raspberry Pi, I had written a tutorial for deploying containers, or more specifi...

You may or may not know this, but I use Sendy to send out my monthly newsletters because it is incredibly cheap in comparison to competitors like Mailchimp. Anyone who has done list building before knows that over time you’re going to end up with a lot of stale subscribers that need to be cleaned in...

Not too long ago I wrote about authenticating within a Node.js API using Json Web Tokens (JWT). The basis of the example is around authenticating via a username and password and receiving a JWT for every future request against the API. While that example is incredibly useful and follows best practic...

One of the highlights of the Go programming language is its ability to handle concurrency with minimal effort using what are called goroutines and channels. The beauty here versus other programming languages is that you don’t end up in a callback mess or locking hell. In fact, you can even create fa...

If you’ve been working towards containerizing your web applications like I have, you might be at a point where you’re ready to start clustering your containers. Previously I had written about creating a container cluster with Docker Swarm and using NGINX as a reverse proxy for a few containers. The ...

I recently invested in yet another Raspberry Pi, this time the new Raspberry Pi Zero W, which has wireless and bluetooth. I also made a leap and bought the camera module with it because the new official case by Raspberry Pi has a camera attachment. Probably the most popular development technology fo...