Is there any reason why System.Reactive.Unit wasn't called System.Reactive.Void?

Question

Mainly, I'm curious.

We have an object called Unit in our codebase - which represents a component for a bridge or a road. In our case, it can be ambiguous to see ReactiveUI Commands with Unit as one of the Generics in a declaration.

Even in this old documentation (Google doesn't point me in the direction of the current documentation - where ever that is), it says:

"Represents void."

So now I'm wondering, is there any meaning behind the term Unit. How come they didn't just call it System.Reactive.Void?

Answer 1

To quote Wikipedia (which also gives examples of other languages using the same name)

a unit type is a type that allows only one value (and thus can hold no information).

In this case the value is Unit.Default.