C参考文献提到了一个名为
fancy pointers的概念.我从最近一次严重的投票和后来删除的问题中了解到了它们的存在.
这个定义模糊不清：
When the member type pointer is not a raw pointer type,it is commonly referred to as a “fancy pointer”.
他们的用例示例如下：
An example of a fancy pointer is the mapping address-independent
pointer boost::interprocess::offset_ptr,which makes it possible to
allocate node-based data structures such as std::set in shared memory
and memory mapped files mapped in different addresses in every
process. Fancy pointers can be used independently of the allocator
that provided them,through the class template std::pointer_traits.
我不明白这个解释.创建花式指针的语法是什么？为什么我不能在这种情况下使用常规指针？
