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

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< cpp‎ | regex‎ | match results
Revision as of 16:17, 7 December 2013 by Dieram3 (Talk | contribs)

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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)

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()
  • std::equal(lhs.begin(), lhs.end(), rhs.begin())
  • lhs.suffix() == rhs.suffix()
1) Checks if lhs and rhs are equal.
2) Checks if lhs and rhs are not equal.

Contents

[edit] Parameters

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

[edit] Return value

1) true if lhs and rhs are equal, false otherwise.
2) true if lhs and rhs are not equal, false otherwise.

[edit] Exceptions

(none)

[edit] Example