# std::allocator<T>::allocator

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< cpp‎ | memory‎ | allocator

| (1) |
allocator() throw(); |  | (until C++11)
allocator() noexcept; |  | (since C++11) (until C++20)
constexpr allocator() noexcept; |  | (since C++20)
| (2) |
allocator( const allocator& other ) throw(); |  | (until C++11)
allocator( const allocator& other ) noexcept; |  | (since C++11) (until C++20)
constexpr allocator( const allocator& other ) noexcept; |  | (since C++20)
| (3) |
template< class U > allocator( const allocator<U>& other ) throw(); |  | (until C++11)
template< class U > allocator( const allocator<U>& other ) noexcept; |  | (since C++11) (until C++20)
template< class U > constexpr allocator( const allocator<U>& other ) noexcept; |  | (since C++20)

Constructs the default allocator. Since the default allocator is stateless, the constructors have no visible effect.

### Parameters

other | - | another allocator to construct with

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