Every two weeks I send out a newsletter containing lots of interesting stuff for the modern PHP developer. You can expect quick tips, links to interesting tutorials, opinions and packages. Want to learn the cool stuff? Then sign up now!

JavaScript’s comma operator

Vitaly Gordon explains how the little known comma operator makes it easy to add some debugging statements in short hand array functions.

What if you want to add a console.log call before x + 1 ? With comma operator, adding side-effects to functional expressions is simple:

const fun = x => (console.log (x), x + 1)


Freek Van der Herten is a partner and developer at Spatie, an Antwerp based company that specializes in creating web apps with Laravel. After hours he writes about modern PHP and Laravel on this blog. When not coding he’s probably rehearsing with his kraut rock band. He loves waffles and butterflies.