placement-new

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What is the proper way to "placement new" an array of structs/classes with a generic member variable?
user_48310510
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4
1
103
placement-new c++
Which union member becomes active after placement new
user_95850160
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12
1
571
placement-new language-lawyer unions lifetime c++
Why isn't there a std::construct_at in C++17?
user_5800830
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66
6
5069
placement-new c++17 c++
Why there is no std::uninitialized_move_if_noexcept?
user_5800830
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10
1
477
noexcept placement-new c++17 move c++
std::optional implemented as union vs char[]/aligned_storage
user_14539460
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15
2
1849
stdoptional placement-new c++17 unions c++
Why isn't it undefined behaviour to destroy an object that was overwritten by placement new?
knatten_70840
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10
4
413
object-lifetime placement-new undefined-behavior language-lawyer c++
Placement new and assignment of class with const member
user_17297840
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12
1
1166
placement-new language-lawyer assignment-operator constants c++
Placement new and destructor
user_72428580
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3
1
903
placement-new destructor c++
How to do placement allocation Eigen::Matrix to Shared Memory (or Heap)?
user_30482550
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3
1
572
eigen shared-memory placement-new memory c++
Why can't constructors be explicitly called while destructors can?
user_5800830
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28
3
4151
explicit-destructor-call placement-new destructor constructor c++
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