Can you explain what are the types of smart pointers,how do they work and when to use them?

有一些他们.简而言之：

scoped_ptr <boost/scoped_ptr.hpp>
Simple sole ownership of single
objects. Noncopyable.

scoped_array <boost/scoped_array.hpp> Simple sole
ownership of arrays. Noncopyable.

shared_ptr <boost/shared_ptr.hpp>
Object ownership shared among
multiple pointers.

shared_array
<boost/shared_array.hpp> Array
ownership shared among multiple
pointers.

weak_ptr
<boost/weak_ptr.hpp> Non-owning
observers of an object owned by
shared_ptr.

intrusive_ptr
<boost/intrusive_ptr.hpp> Shared
ownership of objects with an embedded
reference count.

(这是从Boost文档,并注意到它们也有这样的指针的容器！)

Also,what is the “protocol” when receiving or passing raw pointers in interfaces written by other people?

对我而言,最重要的规则是：

>宪章资格>不要释放我没有分配的东西检查所有权/移动语义的转移