27 lines
847 B
Markdown
27 lines
847 B
Markdown
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# Chapter 13. Copy Control
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Advanced topic for class constructors/desctructors
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Copy Control = operations of following:
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* **Copy- & Move- constructor**: define what happens when an object is initialized from another object of the same type
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* **Copy- & Move- assignment**: define what happens when we assign an object (class A) to object (class B)
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* **Destructor**: define what happens when object of type A destroyed
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When Copy Controls are not cleared defined, C++ compiler automatically create them; -> undefined behavior
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## 13.1 Copy, Assign, And Destroy
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### 13.1.1 Copy Constructor
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```cpp
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class Foo {
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public:
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Foo(); // default constructor
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Foo(const Foo&); // copy constructor
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// ...
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};
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```
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* copy constructor's 1st parameter is a reference to the class type
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* copy constructor's other parameters have default values
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