tuple_selecttuple_selectTupleSelectTupleSelecttuple_select (算子名称)

名称

tuple_selecttuple_selectTupleSelectTupleSelecttuple_select — Select single elements of a tuple.

参数签名

描述

tuple_selecttuple_selectTupleSelectTupleSelectTupleSelecttuple_select selects one or more single elements of the tuple TupleTupleTupleTupletupletuple and returns them with SelectedSelectedSelectedSelectedselectedselected. At this, IndexIndexIndexIndexindexindex determines the indices of the elements to select. Thus, IndexIndexIndexIndexindexindex may only contain integer values (any floating point number within IndexIndexIndexIndexindexindex must represent an integer value without fraction). Indices of tuple elements start at 0, that means, the first tuple element has got the index 0.

Exception: Empty input tuples

If TupleTupleTupleTupletupletuple is empty, an exception is raised.

HDevelop In-line Operation

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

Selected := Tuple[Index]

Selected := subset(Tuple, Index)

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_first_ntuple_first_nTupleFirstNTupleFirstNTupleFirstNtuple_first_n, tuple_last_ntuple_last_nTupleLastNTupleLastNTupleLastNtuple_last_n, tuple_str_bit_selecttuple_str_bit_selectTupleStrBitSelectTupleStrBitSelectTupleStrBitSelecttuple_str_bit_select, tuple_concattuple_concatTupleConcatTupleConcatTupleConcattuple_concat, tuple_select_rangetuple_select_rangeTupleSelectRangeTupleSelectRangeTupleSelectRangetuple_select_range, tuple_select_ranktuple_select_rankTupleSelectRankTupleSelectRankTupleSelectRanktuple_select_rank

参考其它

tuple_removetuple_removeTupleRemoveTupleRemoveTupleRemovetuple_remove

模块

Foundation

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