Winston Logger is one of the most popular logging libraries for Node.js. This library decouples the different aspects of logging, such as log levels, formatting, and storage, to make them independent and provide an array of different combinations. Additionally, you can implement logging in your application using Node.js streams to minimize performance impact. In this article, we are going to discuss how to install Winston Logger and use it for your Node.js application.

ReactJS is undoubtedly the most popular library for developers to build web and mobile applications. Its community is vast, so you get all the support you need as a developer while building applications. However, ReactJS is just a library for user interface development. It encourages us to build applications with the component architecture, which follows a tree hierarchy.

Swift is a high-level programming language developed by Apple, which first appeared on June 2, 2014. Swift is vast and complex, containing all the major features we expect in a modern programming language. Generics are one of the most fundamental tools in all of Swift, empowering us to write more abstract, reusable and clean code. With Generics, we can use different data types in the same functions and classes, with minimum assumptions.

Pickers are UI elements, provided by SwiftUI, that enable our users to choose between multiple options while using our iOS app. In this article we’ll have a look at them to see the various types and explore how they’re declared, configured, and styled. Together with SwiftUI buttons, pickers are one of the most used UI elements in iOS apps.

Arrays enable you to group and order elements of the same type, so they play a crucial role in organizing your app’s data. If you’re building an iOS app, arrays are a vital part of your toolkit, and today we’re going to help you understand them. Specifically, we will give you a backend view of how Arrays work and jump into a host of specific operations, from simple filtering and sorting to complex ways of mapping and reducing them.

Static sites (websites) are not new. In fact they’ve been around since the era of Web 1.0. Back in those dim and distant days the internet only had a few contributors, so managing and maintaining a static website was fairly hassle-free, they use to have a couple of static html files. However, the needs of creators and consumers have changed dramatically since then. So we need a new technology to generate static sites, befitting the resources and innovative spirit of the digital revolution.

NSLog is a very useful function call that iOS developers are able to utilize, and it is one of the most common development tools used to debug iOS apps. Among other things, NSLog can be used to check the value of variables, log any notes that you need to make, and check for errors when you do not have a debugger available. While NSLog is fairly handy, it is not a universal tool that can solve all of your programming problems.

In iOS, geofencing is a location-based feature that enables us to define geographical boundaries and trigger actions, or alerts, when a device enters or exits those boundaries. This feature has become vital to all kinds of apps, enabling them to deliver personal, timely and contextual experiences.

Unit tests are performed on a single unit of code, usually on a specific function, variable or flow. They allow us to test the components in isolation and validate each single component’s reliability in turn. In this article we’ll introduce the concept of Swift unit testing, and explain, at a high level, why you should carry them out, how you can start developing your iOS apps in a test driven development methodology and how you can write Swift unit test cases.