Node.js provides a global JSON object providing methods to parse a JSON string to JavaScript or stringify JavaScript values to a JSON string. The problem is that JavaScript’s global JSON object comes with a flaw allowing prototype pollution attacks. This tutorials shows you how to securely parse JSON …

In the previous two tutorials, you've learned how to set up custom fonts on Android the modern way. Either as fixed font style (such as Noto Serif bold) or as font family (such as Noto serif in several weights). However, so far you've only used XML designs to configure app …

In the last tutorial, we've explored the modern way of implementing custom fonts on Android. However, it broke the support for dynamically changing the font style and weights (for example, bold or italic). In this tutorial, we'll fix this drawback and configure a font family with different styles. {{outline}} {{video} …

In today's competitive app market on Google Play, a beautiful, polished app is necessary to be successful. Custom fonts are an important element of taking an app to the next level and distinct yourselves from the mass. We discussed this in our first tutorials on how to implement custom fonts …

Travis CI is a sophisticated continuous integration and deployment service. It integrates with GitHub and runs tests on events like commits or pull requests. {{outline}} {{video}} At this point, we published two hapi plugins. Testing both plugins is an essential part of our development flow to know they are mature …

Axios is a promise-based HTTP client for the browser and Node.js. It has a convenient and modern API simplifying asynchronous HTTP request and response handling. Let’s explore how to download files with Axios in Node.js. {{outline}} {{video}} Axios File Download in Node.js This tutorial is specifically …

Array.map() is a synchronous operation and runs a function on each element in the array resulting in a new array with the updated items. There are situations where you want to run asynchronous functions within map, e.g. updating a list of models and push the changed information back …

We've tailored our 80+ tutorials on Retrofit to the Android platform. The snippets and examples are usually specifically written for Android apps. But that doesn't do Retrofit justice. Retrofit supports any regular Java project, not just on the Android platform. Even though you can implement the vast majority of our …