operator==,!= (std::match_results)

Defined in header <regex>
template < class BidirIt, class Alloc > bool operator == ( match_results < BidirIt,Alloc > & lhs, match_results < BidirIt,Alloc > & rhs ) ;	(1)	(since C++11)
template < class BidirIt, class Alloc > bool operator ! = ( match_results < BidirIt,Alloc > & lhs, match_results < BidirIt,Alloc > & rhs ) ;	(2)	(since C++11) (until C++20)

Compares two match_results objects.

Two match_results are equal if the following conditions are met:

• neither of the objects is ready , or
• both match results are ready and the following conditions are met:

• lhs. empty ( ) and rhs. empty ( ) , or
• ! lhs. empty ( ) and ! rhs. empty ( ) and the following conditions are met:

• lhs. prefix ( ) == rhs. prefix ( )
• lhs. size ( ) == rhs. size ( ) && std:: equal ( lhs. begin ( ) , lhs. end ( ) , rhs. begin ( ) )
• lhs. suffix ( ) == rhs. suffix ( )

The != operator is synthesized from operator== .

(since C++20)

Parameters

lhs, rhs	-	match results to compare
Type requirements
- BidirIt must meet the requirements of LegacyBidirectionalIterator .
- Alloc must meet the requirements of Allocator .

Return value

Exceptions

May throw implementation-defined exceptions.

Example

This section is incomplete Reason: no example