Add rule for omitting empty enum with associated value arguments

[keith]

Currently you can do this:

enum Foo {
    case bar(String)
}

switch foo {
case .bar(_):
    break
}

I think we should add rule to have people remove (_). Note it can also be (_, _).

I've added this regex on our codebase with no false positives: "\([,\s*_]+\)"

[mortenholmgaard]

I have a method in my enum just like this:
func isCurrent() -> Bool { ... }
And when called like Environment.dev.isCurrent() I get this lint warning in this line which must be wrong.

[SimplyDanny]

You should open an own issue for your example with a more detailed description, @mortenholmgaard. Herein, it will probably be missed.

[mortenholmgaard]

Ups, I just saw that I didn't have the latest version and this seems to be fixed in that version - sorry.