tuple_regexp_testtuple_regexp_testTupleRegexpTestTupleRegexpTesttuple_regexp_test (算子)

名称

tuple_regexp_testtuple_regexp_testTupleRegexpTestTupleRegexpTesttuple_regexp_test — 测试字符串是否与正则表达式匹配。

签名

描述

tuple_regexp_testtuple_regexp_testTupleRegexpTestTupleRegexpTestTupleRegexpTesttuple_regexp_test applies the regular expression in ExpressionExpressionExpressionExpressionexpressionexpression to one or more input strings in DataDataDataDatadatadata, and returns the number of matching strings in NumMatchesNumMatchesNumMatchesNumMatchesnumMatchesnum_matches. In particular, the result for a single input string will be 1 in case of a match, and 0 otherwise.

Please refer to the documentation of tuple_regexp_matchtuple_regexp_matchTupleRegexpMatchTupleRegexpMatchTupleRegexpMatchtuple_regexp_match for syntax and options of regular expressions. Additionally, tuple_regexp_testtuple_regexp_testTupleRegexpTestTupleRegexpTestTupleRegexpTesttuple_regexp_test supports the option 'invert_match'"invert_match""invert_match""invert_match""invert_match""invert_match", which causes those input strings to be counted which do not match the regular expression.

For convenient use in conditional expressions, this functionality is also available as the '=~'"=~""=~""=~""=~""=~" operation in HDevelop.

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

If the input tuple is empty, the operator returns 0.

Unicode 码点与字节

Regular expression matching operates on Unicode code points. One Unicode code point may be composed of multiple bytes in the UTF-8 string. If regular expression matching should only match on bytes, 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.

HDevelop 内联操作

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

NumMatches := regexp_test(Data, Expression) or NumMatches := Data =~ Expression

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

示例（HDevelop）

tuple_regexp_test ('p10662599755', '[A-Z]*', Result)
* Returns 0

tuple_regexp_test ('p10662599755', ['[A-Z]*','ignore_case'], Result)
* Returns 1

替代

tuple_strstrtuple_strstrTupleStrstrTupleStrstrTupleStrstrtuple_strstr

另见

tuple_regexp_matchtuple_regexp_matchTupleRegexpMatchTupleRegexpMatchTupleRegexpMatchtuple_regexp_match, tuple_regexp_replacetuple_regexp_replaceTupleRegexpReplaceTupleRegexpReplaceTupleRegexpReplacetuple_regexp_replace, tuple_regexp_selecttuple_regexp_selectTupleRegexpSelectTupleRegexpSelectTupleRegexpSelecttuple_regexp_select

模块

基础