deduction guides for std::basic_regex

 

C++

Language

Standard Library Headers

Freestanding and hosted implementations

Named requirements

Language support library

Concepts library (C++20)

Diagnostics library

Utilities library

Strings library

Containers library

Iterators library

Ranges library (C++20)

Algorithms library

Numerics library

Input/output library

Localizations library

Regular expressions library (C++11)

Atomic operations library (C++11)

Thread support library (C++11)

Filesystem library (C++17)

Technical Specifications

 

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)

Regex Grammar

Modified ECMAScript-262 (C++11)

 

std::basic_regex

Member Functions

basic_regex::basic_regex

basic_regex::~basic_regex

basic_regex::operator=

basic_regex::assign

Observers

basic_regex::mark_count

basic_regex::flags

Locale

basic_regex::getloc

basic_regex::imbue

Modifiers

basic_regex::swap

Constants

basic_regex constants

Non-member Functions

swap(std::basic_regex)

Deduction guides(C++17)

 

Defined in header <regex>
template<class ForwardIt> basic_regex(ForwardIt, ForwardIt,             std::regex_constants::syntax_option_type = std::regex_constants::ECMAScript) -> basic_regex<typename std::iterator_traits<ForwardIt>::value_type>;		(since C++17)

This deduction guide is provided for std::basic_regex to allow deduction from an iterator range.

Example

Run this code

#include <regex>
#include <vector>
int main() {
   std::vector<char> v = {'a', 'b', 'c'};
   std::basic_regex re{v.begin(), v.end()}; // uses explicit deduction guide
}