Permit all type of data to be checked if empty

[mathieutu]

For example, our LengthAwarePaginator (paginate() method) are throwing an error if they are empty.

You could also check if $data is an instance of Arrayable at the start, and convert it in array to avoid all theses problems and work with arrays in all the methods:

        if ($data instanceof Arrayable) {
            $data = $data->toArray();
        }

        if ($this->dataIsEmpty($data)) {
            return $this->make('No Content', 204);
        }
...

    protected function dataIsEmpty($data)
    {
        return empty($data);
    }

[coveralls]

Coverage remained the same at 100.0% when pulling 0764fec on mathieutu:master into 45ab0b3 on neoxia:master.

[alexandre-butynski]

Both methods are ok. I have no preference between them, your proposal is fine !

The only thing that could be done to complete this is to remove the dependency to the Laravel Collection class. It should be Arrayable instead.