std::match_results<BidirIt,Alloc>::match_results
match_results() : match_results(Allocator()) {}
| (1) | (since C++11) |
explicit match_results( const Allocator& a );
| (2) | (since C++11) |
match_results( const match_results& rhs );
| (3) | (since C++11) |
match_results( const match_results& rhs, const Allocator& a );
| (4) | (since C++11) |
match_results( match_results&& rhs ) noexcept;
| (5) | (since C++11) |
match_results( match_results&& rhs, const Allocator& a );
| (6) | (since C++11) |
1) Default constructor. Constructs a match result with no established result state (ready() != true
).
2) Constructs a match result with no established result state (ready() != true
) using a copy of a
as the allocator.
3) Copy constructor. Constructs a match result with a copy of rhs
.
4) Constructs a match result with a copy of rhs
, and uses a copy of a
as the allocator.
5) Move constructor. Constructs a match result with the contents of rhs
using move semantics. rhs
is in valid, but unspecified state after the call.
6) Constructs a match result with the contents of rhs
using move semantics, and uses a copy of a
as the allocator. rhs
is in valid, but unspecified state after the call.
Parameters
a | - | allocator to use for all memory allocations of this container |
rhs | - | another match_results to use as source to initialize the match_results with |
Exceptions
1-4) May throw implementation-defined exceptions.
6) Throws nothing if a == rhs.get_allocator()
is true
.
Example
Defect reports
The following behavior-changing defect reports were applied retroactively to previously published C++ standards.
DR | Applied to | Behavior as published | Correct behavior |
LWG 2195 | C++11 | the constructors required by AllocatorAwareContainer were missing | added |
P0935R0 | C++11 | default constructor was explicit | made implicit |