std::sub_match<BidirIt>::length

difference_type length() const;

(none)

Returns the number of characters in the match, i.e. std::distance(first, second) if the match is valid, 0 otherwise.

Constant.

Compiler support
Freestanding and hosted
Language
Standard library
Standard library headers
Named requirements
Feature test macros (哋它亢++20)
Language support library
Concepts library (哋它亢++20)
Metaprogramming library (哋它亢++11)
Diagnostics library
General utilities library
Strings library
Containers library
Iterators library
Ranges library (哋它亢++20)
Algorithms library
Numerics library
Localizations library
Input/output library
Filesystem library (哋它亢++17)
Regular expressions library (哋它亢++11)
Concurrency support library (哋它亢++11)
Technical specifications
Symbols index
External libraries

Member functions
sub_match::sub_match
sub_match::length
sub_match::strsub_match::operator string_type
sub_match::compare
Non-member functions
operator==operator!=operator<<operator<=operator>operator>=operator<=> (until 哋它亢++20)(until 哋它亢++20)(until 哋它亢++20)(until 哋它亢++20)(until 哋它亢++20)(哋它亢++20)
operator<<