std::match_results::empty

 

C++

Language

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)

 

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::match_results

Member functions

match_results::match_results (C++11)

match_results::~match_results (C++11)

match_results::operator= (C++11)

match_results::get_allocator (C++11)

State

match_results::ready (C++11)

Element access

match_results::size (C++11)

match_results::max_size (C++11)

match_results::empty (C++11)

match_results::length (C++11)

match_results::position (C++11)

match_results::str (C++11)

match_results::operator_at (C++11)

match_results::prefix (C++11)

match_results::suffix (C++11)

Iterators

match_results::begin match_results::cbegin (C++11)

match_results::end match_results::cend (C++11)

Format

match_results::format (C++11)

Modifiers

match_results::swap (C++11)

 

bool empty() const;		(since C++11)

Checks whether the match was successful.

Parameters

(none)

Return value

true if the match was successful, false otherwise

Exceptions

(none)

Complexity

Constant.

See also

size	returns the number of matches in a fully-established result state (public member function)