<regex>

The latest version of this topic can be found at <regex>.

Defines a template class to parse Regular Expressions (C++), and several template classes and functions to search text for matches to a regular expression object.

Syntax

#include <regex>  

Remarks

To create a regular expression object, use the template class basic_regex Class or one of its specializations, regex and wregex, together with the syntax flags of type regex_constants::syntax_option_type.

To search text for matches to a regular expression object, use the template functions regex_match Function and regex_search Function, together with the match flags of type regex_constants::match_flag_type. These functions return results by using the template class match_results Class and its specializations, cmatch, wcmatch, smatch, and wsmatch, together with the template class sub_match Class and its specializations, csub_match, wcsub_match, ssub_match, and wssub_match.

To replace text that matches a regular expression object, use the template function regex_replace Function, together with the match flags of type regex_constants::match_flag_type.

To iterate through multiple matches of a regular expression object, use the template classes regex_iterator Class and regex_token_iterator Class or one of their specializations, cregex_iterator, sregex_iterator, wcregex_iterator, wsregex_iterator, cregex_token_iterator, sregex_token_iterator, wcregex_token_iterator, or wsregex_token_iterator, together with the match flags of type regex_constants::match_flag_type.

To modify the details of the grammar of regular expressions, write a class that implements the regular expression traits.

Classes

Type Definitions

Functions

Operators

See Also

Regular Expressions (C++)