std::regex_search

 

C++

Language

Concepts

Utilities library

Strings library

Containers library

Algorithms library

Iterators library

Numerics library

Input/output library

Localizations library

Regular expressions library (C++11)

Atomic operations library (C++11)

Thread support library (C++11)

 

Regular expressions library

Classes

basic_regex (C++11)

sub_match (C++11)

match_results (C++11)

Algorithms

regex_match (C++11)

regex_search (C++11)

regex_replace (C++11)

Iterators

regex_iterator (C++11)

regex_token_iterator (C++11)

Exceptions

regex_error (C++11)

Traits

regex_traits (C++11)

Constants

syntax_option_type (C++11)

match_flag_type (C++11)

error_type (C++11)

 

Defined in header <regex>
template< class BidirectionalIterator,           class Alloc, class CharT, class Traits > bool regex_search( BidirectionalIterator first, BidirectionalIterator last,                    std::match_results<BidirectionalIterator,Alloc>& m,                    const std::basic_regex<CharT,Traits>& e,                    std::regex_constants::match_flag_type flags =                        std::regex_constants::match_default );	(1)	(since C++11)
template< class Alloc, class CharT, class Traits > bool regex_search( const CharT* str,                    std::match_results<BidirectionalIterator,Alloc>& m,                    const std::basic_regex<CharT,Traits>& e,                    std::regex_constants::match_flag_type flags =                        std::regex_constants::match_default );	(2)	(since C++11)
template< class STraits, class SAlloc,           class Alloc, class CharT, class Traits > bool regex_search( const std::basic_string<CharT,STraits,SAlloc>& s,                    std::match_results<                        typename std::basic_string<CharT,STraits,SAlloc>::const_iterator,                        Alloc                    >& m,                    const std::basic_regex<charT, traits>& e,                    std::regex_constants::match_flag_type flags =                        std::regex_constants::match_default );	(3)	(since C++11)
template< class BidirectionalIterator,           class CharT, class Traits > bool regex_search( BidirectionalIterator first, BidirectionalIterator last,                    const std::basic_regex<CharT,Traits>& e,                    std::regex_constants::match_flag_type flags =                        std::regex_constants::match_default );	(4)	(since C++11)
template< class CharT, class Traits > bool regex_search( const CharT* str,                    const std::basic_regex<CharT,Traits>& e,                    std::regex_constants::match_flag_type flags =                        std::regex_constants::match_default );	(5)	(since C++11)
template< class STraits, class SAlloc,           class CharT, class Traits > bool regex_search( const std::basic_string<CharT,STraits,SAlloc>& s,                    const std::basic_regex<CharT,Traits>& e,                    std::regex_constants::match_flag_type flags =                        std::regex_constants::match_default );	(6)	(since C++11)

1) Determines if there is a match between the regular express e and some subsequence in the target character sequence [first,last). Match results are returned in m.

2) Returns std::regex_search(str, str + std::char_traits<charT>::length(str), m, e, flags).

3) Returns std::regex_search(s.begin(), s.end(), m, e, flags).

4) The same as (1), omitting the match results.

5) Returns std::regex_search(str, str + std::char_traits<charT>::length(str), e, flags).

6) Returns std::regex_search(s.begin(), s.end(), e, flags).

Parameters

first, last	-	the target character range
m	-	the match results
str	-	a target character null-terminated C-style string
s	-	a target character std::basic_string
e	-	the std::regex
flags	-	the match flags

Return value

Returns true if a match exists somewhere in the target sequence, false otherwise.