std::sub_match::length

From Cppreference

C++ Standard Library
Language 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)
std::sub_match
Member functions sub_match::sub_match (C++11) sub_match::length (C++11) sub_match::str sub_match::operator string_type (C++11) sub_match::compare (C++11) Non-member functions operator== operator!= operator<< operator<= operator> operator>= (C++11)

constexpr sub_match();

Default constructs a std::sub_match. The matched member is set to false and the value of other members is undefined.

This is the only publicly accessible and defined constructor.

[edit] Parameters

(none)