std::regex_iterator<BidirIt,CharT,Traits>::operator*,operator->

 

C++

Compiler support

Freestanding and hosted

Language

Standard library

Standard library headers

Named requirements

Feature test macros (C++20)

Language support library

Concepts library (C++20)

Metaprogramming library (C++11)

Diagnostics library

General utilities library

Strings library

Containers library

Iterators library

Ranges library (C++20)

Algorithms library

Numerics library

Localizations library

Input/output library

Filesystem library (C++17)

Regular expressions library (C++11)

Concurrency support library (C++11)

Execution support library (C++26)

Technical specifications

Symbols index

External libraries

 

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_iterator

Member functions

regex_iterator::regex_iterator

regex_iterator::operator=

Comparisons

regex_iterator::operator==regex_iterator::operator!= (until C++20)

Observers

regex_iterator::operator*regex_iterator::operator->

Modifiers

regex_iterator::operator++regex_iterator::operator++(int)

 

const value_type& operator*() const;	(1)	(since C++11)
const value_type* operator->() const;	(2)	(since C++11)

Extracts the current std::match_results from a regex_iterator.

Return value

1) Returns a reference to the current std::match_results.

2) Returns a pointer to the current std::match_results.

Example

Run this code

#include <iostream>
#include <regex>
#include <string>
 
int main()
{
    std::string hay{"1.1a2b3cjk34"};
    std::regex needle("[1234]");
    using Ri = std::regex_iterator<std::string::iterator>;
    for (Ri it{hay.begin(), hay.end(), needle}, last{}; it != last; ++it)
        std::cout << it->str();
    std::cout << '\n';
}

Output:

112334