If you happen to see this, during an editing pass it would help to include information about what language you're using to present your code examples when the article is standalone for a wide audience.
Something like:
"For this section and the next, let us imagine the guts of a very basic calculator application, expressed in the initial algebra style, using [your language and environment]."
> the code examples are given in a language everyday programmers will probably not recognize
The code examples are given assuming the reader already knows the language and runtime -- not once in the article does it say what this language is or explain the syntax/grammar rules. I would take it to mean this isn't meant for a broad audience, or the author has made a common curse of knowledge[0] mistake.
[0]: "The curse of knowledge is a cognitive bias that occurs when an individual, communicating with other individuals, unknowingly assumes that the others have the background to understand." https://en.wikipedia.org/wiki/Curse_of_knowledge
Something like:
"For this section and the next, let us imagine the guts of a very basic calculator application, expressed in the initial algebra style, using [your language and environment]."