tuple_find_firsttuple_find_firstTupleFindFirstTupleFindFirsttuple_find_first (算子)

名称

tuple_find_firsttuple_find_firstTupleFindFirstTupleFindFirsttuple_find_first — 返回一个元组在另一个元组中第一次出现的索引。

签名

描述

tuple_find_firsttuple_find_firstTupleFindFirstTupleFindFirstTupleFindFirsttuple_find_first searches forward through TupleTupleTupleTupletupletuple for the first occurrence of the values of the second tuple ToFindToFindToFindToFindtoFindto_find and returns the IndexIndexIndexIndexindexindex (in relation to the first input tuple TupleTupleTupleTupletupletuple). For example, if TupleTupleTupleTupletupletuple contains the values [3,4,5,6,1,2,3,4,0] and ToFindToFindToFindToFindtoFindto_find contains the values [3,4], the output IndexIndexIndexIndexindexindex is 0. If the first tuple does not contain the second tuple as a subtuple, tuple_find_firsttuple_find_firstTupleFindFirstTupleFindFirstTupleFindFirsttuple_find_first returns -1 in IndexIndexIndexIndexindexindex. It is allowed to mix strings and numbers in the input tuples.

例外：空输入元组

If either or both of the input tuples are empty, the operator returns an empty tuple.

HDevelop 内联操作

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

Index := find_first(Tuple, ToFind)

执行信息

• 多线程类型：独立（即使使用独占算子也能并行运行）。
• 多线程作用域：全局（可从任何线程调用）。
• 未采用并行化处理。

参数

替代

tuple_findtuple_findTupleFindTupleFindTupleFindtuple_find, tuple_find_lasttuple_find_lastTupleFindLastTupleFindLastTupleFindLasttuple_find_last, tuple_sorttuple_sortTupleSortTupleSortTupleSorttuple_sort, tuple_equal_elemtuple_equal_elemTupleEqualElemTupleEqualElemTupleEqualElemtuple_equal_elem

模块

基础