regex_constants.h File Reference

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## Namespaces

| std
| std::regex_constants

## 5.1 Regular Expression Syntax Options

constexpr syntax_option_type | std::regex_constants::__polynomial
enum | std::regex_constants::__syntax_option { _S_icase , _S_nosubs , _S_optimize , _S_collate , _S_ECMAScript , _S_basic , _S_extended , _S_awk , _S_grep , _S_egrep , _S_polynomial , _S_syntax_last }
constexpr syntax_option_type | std::regex_constants::awk
constexpr syntax_option_type | std::regex_constants::basic
constexpr syntax_option_type | std::regex_constants::collate
constexpr syntax_option_type | std::regex_constants::ECMAScript
constexpr syntax_option_type | std::regex_constants::egrep
constexpr syntax_option_type | std::regex_constants::extended
constexpr syntax_option_type | std::regex_constants::grep
constexpr syntax_option_type | std::regex_constants::icase
constexpr syntax_option_type | std::regex_constants::nosubs
constexpr syntax_option_type | std::regex_constants::operator& (syntax_option_type __a, syntax_option_type __b)
syntax_option_type & | std::regex_constants::operator&= (syntax_option_type &__a, syntax_option_type __b)
constexpr syntax_option_type | std::regex_constants::operator^ (syntax_option_type __a, syntax_option_type __b)
syntax_option_type & | std::regex_constants::operator^= (syntax_option_type &__a, syntax_option_type __b)
constexpr syntax_option_type | std::regex_constants::operator| (syntax_option_type __a, syntax_option_type __b)
syntax_option_type & | std::regex_constants::operator|= (syntax_option_type &__a, syntax_option_type __b)
constexpr syntax_option_type | std::regex_constants::operator~ (syntax_option_type __a)
constexpr syntax_option_type | std::regex_constants::optimize
enum | std::regex_constants::syntax_option_type : unsigned int

## 5.2 Matching Rules

Matching a regular expression against a sequence of characters [first, last) proceeds according to the rules of the grammar specified for the regular expression object, modified according to the effects listed below for any bitmask elements set.
enum | std::regex_constants::__match_flag { _S_not_bol , _S_not_eol , _S_not_bow , _S_not_eow , _S_any , _S_not_null , _S_continuous , _S_prev_avail , _S_sed , _S_no_copy , _S_first_only , _S_match_flag_last }
constexpr match_flag_type | std::regex_constants::format_default
constexpr match_flag_type | std::regex_constants::format_first_only
constexpr match_flag_type | std::regex_constants::format_no_copy
constexpr match_flag_type | std::regex_constants::format_sed
constexpr match_flag_type | std::regex_constants::match_any
constexpr match_flag_type | std::regex_constants::match_continuous
constexpr match_flag_type | std::regex_constants::match_default
enum | std::regex_constants::match_flag_type : unsigned int
constexpr match_flag_type | std::regex_constants::match_not_bol
constexpr match_flag_type | std::regex_constants::match_not_bow
constexpr match_flag_type | std::regex_constants::match_not_eol
constexpr match_flag_type | std::regex_constants::match_not_eow
constexpr match_flag_type | std::regex_constants::match_not_null
constexpr match_flag_type | std::regex_constants::match_prev_avail
constexpr match_flag_type | std::regex_constants::operator& (match_flag_type __a, match_flag_type __b)
match_flag_type & | std::regex_constants::operator&= (match_flag_type &__a, match_flag_type __b)
constexpr match_flag_type | std::regex_constants::operator^ (match_flag_type __a, match_flag_type __b)
match_flag_type & | std::regex_constants::operator^= (match_flag_type &__a, match_flag_type __b)
constexpr match_flag_type | std::regex_constants::operator| (match_flag_type __a, match_flag_type __b)
match_flag_type & | std::regex_constants::operator|= (match_flag_type &__a, match_flag_type __b)
constexpr match_flag_type | std::regex_constants::operator~ (match_flag_type __a)

## Detailed Description

Constant definitions for the std regex library.

This is an internal header file, included by other library headers. Do not attempt to use it directly. Instead, include <regex>.

Definition in file regex_constants.h.