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# std::aligned_union

From cppreference.com
< cpp‎ | types

Defined in header `<type_traits>` |  |
template< std::size_t Len, class... Types > struct aligned_union; |  | (since C++11)

Provides the member typedef `type`, which is a POD type of a size and alignment suitable for use as uninitialized storage for an object of any of the types listed in `Types`. The size of the storage is at least `Len`. std::aligned_union also determines the strictest (largest) alignment requirement among all `Types` and makes it available as the constant `alignment_value`.

### [edit] Member types

Name | Definition
`type` | the POD type suitable for storage of any type from `Types`

### [edit] Helper types

template< std::size_t Len, class... Types > using aligned_union_t = typename aligned_union<Len,Types...>::type; |  | (since C++14)

### [edit] Member constants

alignment_value [static] | the strictest alignment requirement of all `Types` (public static member constant)

### [edit] Example

| This section is incomplete Reason: no example

### [edit] See also

alignment_of (C++11) | obtains the type's alignment requirements (class template) [edit]
aligned_storage (C++11) | defines the type suitable for use as uninitialized storage for types of given size (class template) [edit]

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