Method _meta

dask/dataframe/dask_expr/_expr.py:1258–1264

(self)

    @functools.cached_property
    def _meta(self):
        return make_meta(
            self.operation(
                meta_nonempty(self.frame._meta),
                meta_nonempty(self.other._meta),
            ),
        )

    def _simplify_up(self, parent, dependents):
        if isinstance(parent, Projection):