Method unique

pandas/tests/extension/json/array.py:244–247

(self)

            return np.array([dict(x) for x in self], dtype=dtype, copy=copy)

    def unique(self):
        # Parent method doesn't work since np.array will try to infer
        # a 2-dim object.
        return type(self)([dict(x) for x in {tuple(d.items()) for d in self.data}])

    @classmethod
    def _concat_same_type(cls, to_concat):