同时需要有另一个类型为SSL_CTX的指针。
如果两个指针有相同的基类型，那么它们相同。
Two pointer types are identical if they have identical base types.
铸造成员函数指针到另一个类型和背部，严格的混叠问题？
Casting from member function pointer to another type and back, strict-aliasing issue?
不要使用指针来存放int类型的值。
Do not use a pointer to store an int. For example, don't do this?
判定一个给定的类型是否为成员对象指针类型。
Determines whether a given type is a pointer to member object type.
指针很少跟铸造，比其他的类型说明符的部分。
Pointers have little to do with casting, other than being part of a type specifier.
但与函数指针不同的是，委托是面向对象的、类型安全的和保险的。
Unlike function Pointers however, delegates are object-oriented, type-safe, and secure.
但与函数指针不同的是，委托是面向对象的、类型安全的和保险的。
Unlike function Pointers however, delegates are object-oriented, type-safe, and secure.
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