How to set default value in JavaScript’s Destructuring

Did you know that it's possible to set default value in Javascript object destructuring?

Table of contents

    Let see how it works in action:

    > { firstName = "John" } = {}
    > firstName

    One thing to keep in mind is that it only works with undefined values. It won't work with null, false and 0 as these are normal values.

    > { firstName = "John" } = { firstName: null }
    { firstName: null }
    > { firstName = "John" } = { firstName: 0 }
    { firstName: 0 }
    > {firstName = "John"} = { firstName: false }
    { firstName: false }
    Download our ebook
    Szymon Soppa Web Developer
    Szymon Soppa Curiosum Founder & CEO

    Read more
    on #curiosum blog

    Phoenix LiveView Tutorial: Adding Phoenix PubSub and Pow Authentication to Messenger

    We've already bootstrapped our Phoenix LiveView-based Messenger app's database structure and a first LiveView page.

    This time, we're going to improve real-time communication between the app's users using Phoenix PubSub, and use the Pow library to add secure user authentication.

    As of November 2020, the latest Phoenix LiveView version is 0.14.8 - and the series has been updated to match it!

    5 top-tier companies that use Elixir

    Elixir is a pretty capable language - and it consistently ranks near the top of most loved and wanted languages rankings. It has a large following and some very persuasive preachers as well. But that would not be enough to make me like it – what I need as real proof of its strengths is real businesses that strive with Elixir.

    That’s what this list is all about – a bunch of stories from top companies that chose Elixir and never looked back. Let us show you how its power and versatility shows in practice.