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26. What operations can not be overloaded? How do you think, why?

Posted on 2015-01-24
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What operations can not be overloaded? How do you think, why?
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Question by:Nusrat Nuriyev
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jkr earned 500 total points
ID: 40568260
The operators that cannot be overloaded are



.
 Member selection
 
.*
 Pointer-to-member selection
 
::
 Scope resolution
 
? :
 Conditional
 
#
 Preprocessor convert to string
 
##
 Preprocessor concatenate

Source: https://msdn.microsoft.com/en-us/library/5tk49fh2.aspx 

Sorry about the copy&paste, they were just to many to write down ;o)
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by:jkr
jkr earned 500 total points
ID: 40568262
Ooops, forgot the "Why?" part - Bjarne answers that here: http://www.stroustrup.com/bs_faq2.html#overload-dot
And I won't copy that here, since I had to look that up myself ;o)
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by:Nusrat Nuriyev
ID: 40606139
Okay :)
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by:Nusrat Nuriyev
ID: 40670583
	class Y {
	public:
		void f();
		// ...
	};

	class X {	// assume that you can overload .
		Y* p;
		Y& operator.() { return *p; }
		void f();
		// ...
	};

	void g(X& x)
	{
		x.f();	// X::f or Y::f or error?
	}

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I don't get this example, could you help?
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