C++ concepts: MoveInsertable (since C++11)

 

C++

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C++ concepts

Basic
DefaultConstructible CopyAssignable CopyConstructible	MoveAssignable (C++11) MoveConstructible (C++11) Destructible
Library-Wide
EqualityComparable LessThanComparable Swappable (C++11) ValueSwappable (C++11)	NullablePointer (C++11) Hash (C++11) Allocator
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Container SequenceContainer ReversibleContainer	AssociativeContainer AllocatorAwareContainer UnorderedAssociativeContainer (C++11)
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CopyInsertable (C++11) MoveInsertable (C++11)	EmplaceConstructible (C++11)
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Iterator OutputIterator InputIterator	ForwardIterator BidirectionalIterator RandomAccessIterator
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FormattedInputFunction UnformattedInputFunction	FormattedOutputFunction UnformattedOutputFunction
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SeedSequence (C++11) RandomNumberEngine (C++11)	RandomNumberDistribution (C++11) UniformRandomNumberGenerator (C++11) RandomNumberEngineAdaptor (C++11)
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BasicLockable (C++11) Lockable (C++11) TimedLockable (C++11)	Mutex (C++11) TimedMutex (C++11)
Other
CharTraits pos_type off_type Clock (C++11)	UnaryTypeTrait (C++11) BinaryTypeTrait (C++11) TransformationTrait (C++11) TrivialClock (C++11)

 

Specifies that a rvalue of the type can be copied in uninitialized storage.

Requirements

The type T is MoveInsertable into the Container X if, given

A	the allocator type defined as X::allocator_type
m	the lvalue of type A obtained from X::get_allocator()
p	the pointer of type T* prepared by the container
rv	rvalue expression of type T, provided as the argument to push_back(), etc

the following expression is well-formed:

std::allocator_traits<A>::construct(m, p, rv);

The difference with CopyInsertable is that the requirement is for an rvalue expression of type T.

Note that if A is std::allocator<T>, then this will call placement-new, as by ::new((void*)p) T(rv).

See Also

CopyInsertable