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Clojure Zippers

Published: 20 May 2021
Tags: clojure

In programming, a zipper is "a wrapper that offers a variety of data manipulations". But zippers are an abstraction and come with their own complexity. Ivan Grishaev's eight part article traverses the basics of navigation, automatic navigation, XML zippers, XML search, editing, virtual trees, breadth-first traversal, and concludes with a summary.

How to Eliminate Render-Blocking Resources: a Deep Dive

Published: 13 July 2021
Tags: javascript, html, css

If you're looking to optimize your website's user experience, or SEO performance, the time it takes for a page to load is an essential criterion. One of the key factors affecting this stat is what Sia Karamalegos addresses in this titular article. Sia goes into the what, why, when, and how, thoroughly exposing render-blocking resources.

Ballerina Concurrency Model and Non-Blocking I/O

Published: 26 February 2021
Tags: ballerina

Ballerina is an open-source programming language for the cloud that specializes in using, combining, and creating network services, and has a "unique concurrency model that promotes efficient resource usage and provides an intuitive programming model for users". In this article, Anjana Fernando briefly describes how concurrency works in general, then in Ballerina, followed by an analysis of examples.