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Default constructors - correction for C++, clarification for other languages. |
Bollocks! While default access level in C++ is public for "struct" and private for "class" this is in no way special behaviour for constructors and thus irrelevant for this article. |
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y = r*sin(alpha); // <- Normal assignment
}
private:
double x;
double y;
};
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c(5, M_PI/4);
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In C++ the copy constructor is called implicitly when class objects are returned from a method by return mechanism or when class objects are passed by value to a function. C++ provides a copy constructor if the programmer does not. The default copy constructor ONLY makes member-wise copy or shallow copies. For deep copies an explicit copy constructor that makes deep copies is required. For a class to make deep copies, the three methods below must be provided.
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