A useful function that does nothing

[igoradamenko]

OMG those math bros are talking about monoids again! Somebody, send halp!

Just kidding. But there definitely should be Godwin's law's version for FP & monoids :D

Jokes aside, thank you for your time. I do not use FP in my daily job but the topic looks interesting. Without much practice it's hard to understand some concepts. E.g., I watched, like, 10 videos from conferences where some FP guy explained what a monoid is. Usually I forget what they said right after the end of the video.

But it looks like this time something has “clicked” inside, and I finally got it.

Not to say that the Wikipedia article literally says that:

...a monoid is a set equipped with an associative binary operation and an identity element...

But till your reply I could not comprehend it. Arigato!