deduction guides for std::basic_regex

 

C++

Compiler support

Freestanding and hosted

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Named requirements

Feature test macros (C++20)

Language support library

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External libraries

 

Text processing library

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Regular expressions library (C++11)

Formatting library (C++20)

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Primitive numeric conversions

to_chars (C++17) to_chars_result (C++17) from_chars (C++17) from_chars_result (C++17) chars_format (C++17)

Text encoding identifications

text_encoding (C++26)

 

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

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
}

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