tuple_select_ranktuple_select_rankTupleSelectRankTupleSelectRanktuple_select_rank (算子名称)

名称

tuple_select_ranktuple_select_rankTupleSelectRankTupleSelectRanktuple_select_rank — Select the element of rank n of a tuple.

参数签名

描述

tuple_select_ranktuple_select_rankTupleSelectRankTupleSelectRankTupleSelectRanktuple_select_rank sorts the elements of the tuple TupleTupleTupleTupletupletuple and returns the element of rank n in SelectedSelectedSelectedSelectedselectedselected. RankIndexRankIndexRankIndexRankIndexrankIndexrank_index determines the index of the element to select. Thus, RankIndexRankIndexRankIndexRankIndexrankIndexrank_index may only contain integer values (any floating point number in RankIndexRankIndexRankIndexRankIndexrankIndexrank_index must represent an integer value without fraction). Indices of tuple elements start at 0, i.e. the lowest tuple element has the index 0.

Exception: Empty input tuples

If RankIndexRankIndexRankIndexRankIndexrankIndexrank_index is empty, 该算子 returns an empty tuple.

HDevelop In-line Operation

HDevelop provides an in-line operation for tuple_select_ranktuple_select_rankTupleSelectRankTupleSelectRankTupleSelectRanktuple_select_rank, which can be used in an expression in the following syntax:

Selected := select_rank(Tuple, RankIndex)

运行信息

• Multithreading type: independent (runs in parallel even with exclusive operators).
• 多线程作用域:全局(可以从任何线程调用)。
• 未经并行化处理。

参数表

可替代算子

tuple_sort_indextuple_sort_indexTupleSortIndexTupleSortIndexTupleSortIndextuple_sort_index, tuple_sorttuple_sortTupleSortTupleSortTupleSorttuple_sort

参考其它

tuple_mediantuple_medianTupleMedianTupleMedianTupleMediantuple_median, tuple_selecttuple_selectTupleSelectTupleSelectTupleSelecttuple_select

模块

Foundation

---