tuple_str_bit_selecttuple_str_bit_selectTupleStrBitSelectTupleStrBitSelecttuple_str_bit_select (算子名称)

名称

tuple_str_bit_selecttuple_str_bit_selectTupleStrBitSelectTupleStrBitSelecttuple_str_bit_select — Select single character or bit from a tuple.

参数签名

描述

tuple_str_bit_selecttuple_str_bit_selectTupleStrBitSelectTupleStrBitSelectTupleStrBitSelecttuple_str_bit_select selects a single character or bit from a tuple TupleTupleTupleTupletupletuple of integer numbers and/or strings. The input parameter IndexIndexIndexIndexindexindex determines the character or bit position to select. IndexIndexIndexIndexindexindex must contain a single number. If IndexIndexIndexIndexindexindex contains a floating point number, this may only represent an integer value (without fraction). The result tuple SelectedSelectedSelectedSelectedselectedselected contains a new element for each element of TupleTupleTupleTupletupletuple. Let IndexIndexIndexIndexindexindex contain the number “n” then each element of SelectedSelectedSelectedSelectedselectedselected consists of the “n-th” character (for strings) or “n-th” bit (for integers) of the corresponding element of TupleTupleTupleTupletupletuple.

If TupleTupleTupleTupletupletuple is empty, an exception is raised.

Unicode code points versus bytes

The index reference Unicode code points. One Unicode code point may be composed of multiple bytes in the UTF-8 string. If the index should reference the raw bytes of the string, this operator can be switched to byte mode with set_system('tsp_tuple_string_operator_mode','byte')set_system("tsp_tuple_string_operator_mode","byte")SetSystem("tsp_tuple_string_operator_mode","byte")SetSystem("tsp_tuple_string_operator_mode","byte")SetSystem("tsp_tuple_string_operator_mode","byte")set_system("tsp_tuple_string_operator_mode","byte"). If 'filename_encoding'"filename_encoding""filename_encoding""filename_encoding""filename_encoding""filename_encoding" is set to 'locale'"locale""locale""locale""locale""locale" (legacy), this operator always uses the byte mode.

For general information about string operations see Tuple / String Operations.

HDevelop In-line Operation

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

Selected := 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_selecttuple_selectTupleSelectTupleSelectTupleSelecttuple_select, tuple_first_ntuple_first_nTupleFirstNTupleFirstNTupleFirstNtuple_first_n, tuple_last_ntuple_last_nTupleLastNTupleLastNTupleLastNtuple_last_n, tuple_concattuple_concatTupleConcatTupleConcatTupleConcattuple_concat, tuple_strchrtuple_strchrTupleStrchrTupleStrchrTupleStrchrtuple_strchr, tuple_strrchrtuple_strrchrTupleStrrchrTupleStrrchrTupleStrrchrtuple_strrchr, tuple_str_first_ntuple_str_first_nTupleStrFirstNTupleStrFirstNTupleStrFirstNtuple_str_first_n, tuple_str_last_ntuple_str_last_nTupleStrLastNTupleStrLastNTupleStrLastNtuple_str_last_n, tuple_substrtuple_substrTupleSubstrTupleSubstrTupleSubstrtuple_substr, tuple_andtuple_andTupleAndTupleAndTupleAndtuple_and, tuple_ortuple_orTupleOrTupleOrTupleOrtuple_or, tuple_xortuple_xorTupleXorTupleXorTupleXortuple_xor, tuple_nottuple_notTupleNotTupleNotTupleNottuple_not

参考其它

tuple_removetuple_removeTupleRemoveTupleRemoveTupleRemovetuple_remove

模块

Foundation

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