Svelte claims that the "Virtual DOM is pure overhead". This claim has received widespread acceptance. Even the React team focuses their defense of the Virtual DOM on the possibilities it enables (e.g. Concurrent React). Nevertheless, the claim by Svelte is unequivocally false. The key to this realization is a distinction between the two classes of updates that need to be performed by a reactive framework: value and structural. In the case of value updates, the Virtual DOM is indeed the wrong tool. In the case of structural updates, the Virtual DOM is indispensable.
In this episode we'll create a Parser class and implement map, a method that will allow us to apply arbitrary structure as we parse. We'll also build more ge...
The cognitive load introduced by having a single return statement in a function (normally accompanied by a result variable) is often underappreciated, but luckily with a little refactoring it’s fairly easy to resolve.
Before we dive into this post, I would like to send a message to anyone entering the technology/programming world: When I first started to learn how to program, it felt as if I was in a rut of…