tuple_select_ranktuple_select_rankTupleSelectRankTupleSelectRank (Operator)

Name

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

Signature

Description

tuple_select_ranktuple_select_rankTupleSelectRankTupleSelectRankTupleSelectRank sorts the elements of the tuple TupleTupleTupleTupletuple and returns the element of rank n in SelectedSelectedSelectedSelectedselected. RankIndexRankIndexRankIndexRankIndexrankIndex determines the index of the element to select. Thus, RankIndexRankIndexRankIndexRankIndexrankIndex may only contain integer values (any floating point number in RankIndexRankIndexRankIndexRankIndexrankIndex 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 RankIndexRankIndexRankIndexRankIndexrankIndex is empty, the operator returns an empty tuple.

HDevelop In-line Operation

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

Selected := select_rank(Tuple, RankIndex)

Execution Information

• Multithreading type: independent (runs in parallel even with exclusive operators).
• Multithreading scope: global (may be called from any thread).
• Processed without parallelization.

Parameters

Alternatives

tuple_sort_indextuple_sort_indexTupleSortIndexTupleSortIndexTupleSortIndex, tuple_sorttuple_sortTupleSortTupleSortTupleSort

See also

tuple_mediantuple_medianTupleMedianTupleMedianTupleMedian, tuple_selecttuple_selectTupleSelectTupleSelectTupleSelect

Module

Foundation