std::allocator::allocator
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                    |   allocator(); 
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(1) | |
|   allocator( const allocator& other ); 
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(2) | |
|   template< class U >  
allocator( const allocator<U>& other );  | 
(3) | |
Constructs the default allocator. Since the default allocator is stateless, the constructors have no visible effect.
[edit] Parameters
| other | - | another allocator to construct with |