<regex>

• Target sequence (subject): The sequence of characters searched for the pattern. Generally, this is a range specified by two iterators, but some functions also accept a c-string or a string object instead.
• Regular expression (pattern): The pattern which is searched for in the target sequence. This must be an object of a basic_regex type (such as regex), generally constructed from a string with a special syntax that describes what constitutes a match (see ECMAScript syntax).
• Matches array: Some operations allow to retrieve information about matches. This information is stored in one of the special match_results array types (such as cmatch or smatch).
• Replacement string: Some operations can replace matches. These replacements are specified in strings that allow for a special format (see ECMAScript syntax).

Regex operations

Functions:

regex_match

Match sequence (function template)

regex_search

Search sequence (function template)

regex_replace

Replace matched sequence (function template)

Iterator types:

regex_iterator

Regex iterator (class template)

regex_token_iterator

Regex token iterator (class template)

Classes

Basic types:

basic_regex

Regular expression (class template)

match_results

Match results (class template)

sub_match

Sub-expression match (class template)

regex_traits

Regex traits (class template)

regex_error

Regex exception (class)

basic_regex instantiations:

regex

Regex (class)

wregex

Regex for wchar_t (class)

match_results instantiations:

cmatch

match_results for string literals (class)

wcmatch

match_results for wide string literals (class)

smatch

match_results for string objects (class)

wsmatch

match_results for wide string objects (class)

sub_match instantiations:

csub_match

sub_match for string literals (class)

wcsub_match

sub_match for wide string literals (class)

ssub_match

sub_match for strings (class)

wssub_match

sub_match for wide strings (class)

Namespaces

regex_constants

regex constants (namespace)

Grammar

ECMAScript syntax

ECMAScript regular expressions pattern syntax (syntax specifications)

Other functions

begin

Iterator to beginning (function template)

end

Iterator to end (function template)