std::match_results::empty

 

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)

 

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

match_results::~match_results

match_results::operator=

match_results::get_allocator

State

match_results::ready

Element access

match_results::size

match_results::max_size

match_results::empty

match_results::length

match_results::position

match_results::str

match_results::operator_at

match_results::prefix

match_results::suffix

Iterators

match_results::begin match_results::cbegin

match_results::end match_results::cend

Format

match_results::format

Modifiers

match_results::swap

 

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

Checks whether the match was successful.

Parameters

(none)

Return value

true if the match_results object contains no matches., false otherwise

Exceptions

(none)

Complexity

Constant.

See also

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