regex_constants.h File Reference

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## Namespaces

namespace | std
namespace | std::regex_constants

## 5.1 Regular Expression Syntax Options

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_syntax_last }
typedef unsigned int | std::regex_constants::syntax_option_type
constexpr syntax_option_type | std::regex_constants::icase
constexpr syntax_option_type | std::regex_constants::nosubs
constexpr syntax_option_type | std::regex_constants::optimize
constexpr syntax_option_type | std::regex_constants::collate
constexpr syntax_option_type | std::regex_constants::ECMAScript
constexpr syntax_option_type | std::regex_constants::basic
constexpr syntax_option_type | std::regex_constants::extended
constexpr syntax_option_type | std::regex_constants::awk
constexpr syntax_option_type | std::regex_constants::grep
constexpr syntax_option_type | std::regex_constants::egrep

## 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 }
typedef std::bitset < _S_match_flag_last > | std::regex_constants::match_flag_type
constexpr match_flag_type | std::regex_constants::match_default
constexpr match_flag_type | std::regex_constants::match_not_bol
constexpr match_flag_type | std::regex_constants::match_not_eol
constexpr match_flag_type | std::regex_constants::match_not_bow
constexpr match_flag_type | std::regex_constants::match_not_eow
constexpr match_flag_type | std::regex_constants::match_any
constexpr match_flag_type | std::regex_constants::match_not_null
constexpr match_flag_type | std::regex_constants::match_continuous
constexpr match_flag_type | std::regex_constants::match_prev_avail
constexpr match_flag_type | std::regex_constants::format_default
constexpr match_flag_type | std::regex_constants::format_sed
constexpr match_flag_type | std::regex_constants::format_no_copy
constexpr match_flag_type | std::regex_constants::format_first_only

## 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.