Jeff's allocator revolves around object caching.
Jeff的分配器是围绕对象缓存进行的。
When allocators are allowed to have state, it is necessary to have a model for determining from where an object obtains its allocator.
如果分配器允许具有状态，则需要有一个模型来判断一个对象从何处得到它的分配器。
When allocators are allowed to have state, it is necessary to have a model for determining from where an object obtains its allocator.
如果分配器允许具有状态，则需要有一个模型来判断一个对象从何处得到它的分配器。
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