operator==,!=(std::match_results)
From cppreference.com
< cpp | regex | match results
Defined in header <regex>
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template
<
class BidirIt, class Alloc >
bool operator==
( match_results<BidirIt,Alloc>
& lhs, |
(1) | (since C++11) |
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template
<
class BidirIt, class Alloc >
bool operator!
=
( match_results<BidirIt,Alloc>
& lhs, |
(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:
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- lhs.empty() and rhs.empty(), or
- !lhs.empty() and !rhs.empty()
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- lhs.prefix() == rhs.prefix()
- lhs.size ( ) == rhs.size ( ) && 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.
The |
(since C++20) |
Parameters
| lhs, rhs | - | match results to compare |
| Type requirements | ||
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BidirIt must meet the requirements of LegacyBidirectionalIterator
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Alloc must meet the requirements of Allocator
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Return value
1)
true if lhs and rhs are equal, false
2)
true if lhs and rhs are not equal, false
Exceptions
May throw implementation-defined exceptions.
Example
| This section is incomplete Reason: no example |