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Hidden implementation and decoupling, knowing Pimpl mode
2022-06-13 04:51:00 【Feng jungle】
1. PImpl Model introduction
PImpl,Pointer to Implementation, Pointer to implementation . This is a C++ A common pattern in . Strictly speaking, , Limited to pointer form ,PImpl It's not a design pattern , It's just C++ An idiom of a programming language .PImpl Through a private member pointer , Hide the inner implementation of the class pointed to by the pointer . As shown in the figure below :
among , In the header file, you need to PImpl Make a forward statement , And save a private PImpl The pointer . Initialize this pointer in the constructor , Release the pointer in the destructor . Of course , You can also use smart pointers .
In the class A In the implementation of the exposed interface , Than
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