Method prepend

acouchbase/datastructures.py:160–186

Add an item to the beginning of a list. :param value: Value to prepend :return: :class:`OperationResult`. This function is identical to :meth:`list_append`, except for prepending rather than appending the item .. seealso:: :meth:`list_append`, :met

(self, value: JSONType)

                                       create_type=True)

    async def prepend(self, value: JSONType) -> None:
        """
        Add an item to the beginning of a list.

        :param value: Value to prepend
        :return: :class:`OperationResult`.

        This function is identical to :meth:`list_append`, except for prepending
        rather than appending the item

        .. seealso:: :meth:`list_append`, :meth:`map_add`
        """
        op_type = DatastructureOperationType.ListPrepend
        async with ObservableRequestHandler(op_type, self._impl.observability_instruments) as ds_obs_handler:
            ds_obs_handler.create_kv_span(self._impl._request_builder._collection_dtls.get_details_as_dict())
            kv_op_type = KeyValueOperationType.MutateIn
            async with ObservableRequestHandler(kv_op_type, self._impl.observability_instruments) as obs_handler:
                op = array_prepend('', value)
                req = self._impl.request_builder.build_mutate_in_request(self._key,
                                                                         (op,),
                                                                         obs_handler,
                                                                         parent_span=ds_obs_handler.wrapped_span)
                await self._execute_op(self._impl.mutate_in,
                                       req,
                                       obs_handler,
                                       ds_obs_handler.wrapped_span,
                                       create_type=True)

    async def set_at(self, index: int, value: JSONType) -> None:
        """