C++ concepts: CopyInsertable
Specifies that an instance of the type can be copy-constructed in-place, in uninitialized storage.
CopyInsertable into the container
X if, given
|| the allocator type defined as |
|| the lvalue of type |
|| the pointer of type |
|| expression of type |
the following expression is well-formed:
std::allocator_traits<A>::construct(m, p, v);
And after evaluation, the value of *p is equivalent to the value of v. The value of v is not changed.
Note that if
A is std::allocator<T>, then this will call placement-new, as by ::new((void*)p) T(v)