Method _meta

dask/dataframe/dask_expr/_expr.py:1285–1287

(self)

    @functools.cached_property
    def _meta(self):
        args = [self.operands[0]._meta] + [self.operands[1][0]] + self.operands[2:]
        return self.operation(*args)

    def _task(self, name: Key, index: int) -> Task:
        args = [self._blockwise_arg(self.frame, index)] + [