std::regex_traits::regex_traits

 

C++

Language

Standard library headers

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)

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::regex_traits

Member Functions

regex_traits::regex_traits

regex_traits::length

regex_traits::translate

regex_traits::translate_nocase

regex_traits::transform

regex_traits::transform_primary

regex_traits::lookup_collatename

regex_traits::lookup_classname

regex_traits::isctype

regex_traits::value

regex_traits::imbue

regex_traits::getloc

 

regex_traits();

Default-constructs the std::regex_traits object, including default-constructing the private std::locale member or any other internal state as necessary.

Parameters

(none)

Return value

(none)

Example

Run this code

#include <iostream>
#include <regex>
 
int main()
{
    std::locale::global(std::locale("en_US.utf8"));
    std::regex_traits<char> r1;
    std::regex_traits<wchar_t> r2;
    std::cout << "The regex locale is " << r1.getloc().name() << '\n';
}

Output:

The regex locale is en_US.utf8