C++ concepts: EmplaceConstructible (since C++11)
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                    Specifies that an object of the type can be constructed in uninitialized storage.
[edit] Requirements
The type T is EmplaceConstructible into the Container X from the arguments args if, given
  A
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  the allocator type defined as X::allocator_type
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  m
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  the lvalue of type A obtained from X::get_allocator()
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  p
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  the pointer of type T* prepared by the container
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  args
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  zero or more arguments passed to the constructor of T
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the following expression is well-formed:
std::allocator_traits<A>::construct(m, p, args);
[edit] See Also
  CopyInsertable
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  MoveInsertable
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