Bug #20251
Updated by phillipp (Phillipp Röll) over 1 year ago
Suppose we have the following method as part of an API client:
```
def post(path, params, timeout: 30)
end
```
The method is then called like this:
```
post("/persons", name: "John Doe")
```
This leads to an error message `ArgumentError: wrong number of arguments (given 1, expected 2)`. I suppose the (implicit) hash is used for keyword arguments.
My expectation would be, that:
1. the Hash (passed without the brackets, but that is not needed in other cases) would be accepted as the `params` argument _or_
2. that an a `ArgumentError` would be raised with the message `ArgumentError: unknown keyword: :name`
In my opinion, the first case should be what's happening, happending, the second behaviour would be my expectation if that's not possible, because a hash without brackets can't be mixed without passing keyword arguments.
Either way, starting with Ruby 3.0, the behaviour makes no sense to me anymore.