What does a single splat/asterisk in a Ruby argument list mean? [duplicate]

This question already has an answer here: naked asterisk as parameter in method definition: def f(*) 开发者_Python百科 (1 answer) Closed 10 years ago.

I was poking through the Rails 3 ActiveRecord source code today and found a method where the entire parameter list was a single asterisk.

def save(*)

I couldn't find a good description of what this does (though I have some ideas based on what I know about splat arguments).

What does it do, and why would you use it?

---

It means it can have any number of arguments (including zero) and it discards all those arguments.