This is a really poorly written article covering the basics of delegates.
You'll be better off reading C# documentation on delegates.
With that title, I was expecting something more along the lines of how delegates work under the hood, rather than a brief overview of how to use delegates.
I genuinely recommend the Pro C# book from Andrew Troelsen for this - they taught a young impressionable me software development without the OOP evangelism of similar Java / C# books. Most important book in my career to this point, by far.
Really weak article, I didn't expect to see such article on HN.
> Delegates are a language feature of C# that have been around for a few years now,
You mean since the very beginning of C# and .NET Framework? :-D
I'm... not quite sure what's decoded here? Yeah, C# has delegates, and yeah, their syntax is pretty much as shown (and extensively documented elsewhere) here, but, then what?