tuple_strrchrtuple_strrchrTupleStrrchrTupleStrrchr (Operator)


tuple_strrchrtuple_strrchrTupleStrrchrTupleStrrchr — Backward search for characters within a string tuple.


tuple_strrchr( : : String, ToFind : Position)

Herror tuple_strrchr(const char* String, const char* ToFind, Hlong* Position)

Herror T_tuple_strrchr(const Htuple String, const Htuple ToFind, Htuple* Position)

void TupleStrrchr(const HTuple& String, const HTuple& ToFind, HTuple* Position)

HTuple HTuple::TupleStrrchr(const HTuple& ToFind) const

static void HOperatorSet.TupleStrrchr(HTuple stringVal, HTuple toFind, out HTuple position)

HTuple HTuple.TupleStrrchr(HTuple toFind)


tuple_strrchrtuple_strrchrTupleStrrchrTupleStrrchrTupleStrrchr searches within the strings of the input tuple StringStringStringStringstringVal for the characters of the input tuple ToFindToFindToFindToFindtoFind. Both input tuples may only consist of strings. Otherwise tuple_strrchrtuple_strrchrTupleStrrchrTupleStrrchrTupleStrrchr returns an error. In any case backward search is used, i.e., every string is examined from its last to its first character. If the elements of ToFindToFindToFindToFindtoFind contain more than one character, only the first character of each element is considered for searching. If StringStringStringStringstringVal contains only one string, all the characters defined in ToFindToFindToFindToFindtoFind are searched in this string. Thus, the output tuple consists of as many elements as ToFindToFindToFindToFindtoFind. Whenever a searched character has been found, the position of its first occurrence gets stored in the output tuple PositionPositionPositionPositionposition . If a character can not be found, -1 will be returned instead of its position (remark: the position starts at 0 for the first character of a string). If both input tuples show the same number of elements, the search is done elementwise. I.e., the first character of the first element of ToFindToFindToFindToFindtoFind is searched within the first string of StringStringStringStringstringVal, the first character of the second element of ToFindToFindToFindToFindtoFind is searched within the second string of StringStringStringStringstringVal and so on. The results of the elementwise searches are returned with PositionPositionPositionPositionposition that contains as many elements as StringStringStringStringstringVal and ToFindToFindToFindToFindtoFind. If ToFindToFindToFindToFindtoFind only contains one string, its first character is searched within all strings of StringStringStringStringstringVal. Thus, in this case PositionPositionPositionPositionposition consists of as many elements as StringStringStringStringstringVal. If both input tuples contain more than one element and the number of elements differs for the input tuples, tuple_strrchrtuple_strrchrTupleStrrchrTupleStrrchrTupleStrrchr returns an error.

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

Unicode code points versus bytes

The position references Unicode code points. One Unicode code point may be composed of multiple bytes in the UTF-8 string. If the position 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"). If 'filename_encoding'"filename_encoding""filename_encoding""filename_encoding""filename_encoding" is set to '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_strrchrtuple_strrchrTupleStrrchrTupleStrrchrTupleStrrchr, which can be used in an expression in the following syntax:

Position := strrchr(String, ToFind)

Execution Information


StringStringStringStringstringVal (input_control)  string(-array) HTupleHTupleHtuple (string) (string) (HString) (char*)

Input tuple with string(s) to examine.

ToFindToFindToFindToFindtoFind (input_control)  string(-array) HTupleHTupleHtuple (string) (string) (HString) (char*)

Input tuple with character(s) to search.

PositionPositionPositionPositionposition (output_control)  integer(-array) HTupleHTupleHtuple (integer) (int / long) (Hlong) (Hlong)

Position of searched character(s) within the string(s).


tuple_strchrtuple_strchrTupleStrchrTupleStrchrTupleStrchr, tuple_strstrtuple_strstrTupleStrstrTupleStrstrTupleStrstr, tuple_strrstrtuple_strrstrTupleStrrstrTupleStrrstrTupleStrrstr, tuple_strlentuple_strlenTupleStrlenTupleStrlenTupleStrlen, tuple_substrtuple_substrTupleSubstrTupleSubstrTupleSubstr, tuple_str_first_ntuple_str_first_nTupleStrFirstNTupleStrFirstNTupleStrFirstN, tuple_str_last_ntuple_str_last_nTupleStrLastNTupleStrLastNTupleStrLastN, tuple_splittuple_splitTupleSplitTupleSplitTupleSplit, tuple_environmenttuple_environmentTupleEnvironmentTupleEnvironmentTupleEnvironment