tuple_uniqtuple_uniqTupleUniqTupleUniqtuple_uniq (算子名称)

名称

tuple_uniqtuple_uniqTupleUniqTupleUniqtuple_uniq — Discard all but one of successive identical elements of a tuple.

参数签名

描述

tuple_uniqtuple_uniqTupleUniqTupleUniqTupleUniqtuple_uniq discards all but one of successive identical elements from the input tuple TupleTupleTupleTupletupletuple and returns the remaining elements in UniqUniqUniqUniquniquniq. For example, if TupleTupleTupleTupletupletuple contains the values [0,0,1,1,1,2,0,1], the output tuple UniqUniqUniqUniquniquniq will contain the values [0,1,2,0,1]. It is allowed to mix strings and numbers in the input tuple.

To get a tuple UniqUniqUniqUniquniquniq that contains all different entries of TupleTupleTupleTupletupletuple exactly once, use 该算子 tuple_sorttuple_sortTupleSortTupleSortTupleSorttuple_sort first. Note however that in this case the output tuple UniqUniqUniqUniquniquniq is sorted. The result of the above example then is [0,1,2].

Exception: Empty input tuple

If the input tuple is empty, 该算子 returns an empty tuple.

HDevelop In-line Operation

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

Uniq := uniq(Tuple)

As mentioned above, you can use tuple_sorttuple_sortTupleSortTupleSortTupleSorttuple_sort to truly get all unique elements of TupleTupleTupleTupletupletuple.

Uniq := uniq(sort(Tuple))

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

例程 (HDevelop)

Tuple := [0,0,1,1,1,2,0,1]
*
tuple_uniq (Tuple, Uniq)
*
tuple_sort (Uniq, Sorted)
tuple_uniq (Sorted, Uniq1)

可能的前置算子

tuple_inversetuple_inverseTupleInverseTupleInverseTupleInversetuple_inverse, tuple_sorttuple_sortTupleSortTupleSortTupleSorttuple_sort

可替代算子

tuple_intersectiontuple_intersectionTupleIntersectionTupleIntersectionTupleIntersectiontuple_intersection

模块

Foundation

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