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Summary

Allocators encapsulate allocation and deallocation of memory. They provide a low-level interface that permits efficient allocation of many small objects; different allocator types represent different schemes for memory management.

Note that allocators simply allocate and deallocate memory, as opposed to creating and destroying objects. The STL also includes several low-level algorithms for manipulating uninitialized memory.

Note also that allocators do not attempt to encapsulate multiple memory models. The C++ language only defines a single memory model (the difference of two pointers, for example, is always ptrdiff_t), and this memory model is the only one that allocators support. This is a major change from the definition of allocators in the original STL. [1]


Classes | Standard Template Library Programmer`s Guide | Description







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