Earlier quoted context omitted.
You'll find, at times, that those communicating in a language that's not their primary language will tend to deviate from what one whose it was their primary language might expect. If that's obvious to you than you're just being rude. If it's not obvious to you, then you'll also find this is a common deviance (plural 'code') from those who come from a particular primary language's region. Edit; This got me thinking -…
"Codes" as a way to refer to programs/libraries is actually common usage in academia and scientific programming, even by native English speakers. I believe, but am not sure, that it may just be relatively old jargon, before the use of "programs" became more common in the industry. As for the grammar rule, it's the question of whether a word is countable or uncountable. In common industry usage, "code" is an uncountab…
This was very helpful, thank you! (I had just gotten off the phone with Claude learning about countable and uncountable nouns but those additional details you provided should prove quite valuable)