Interview Question for Tech Leads


Country: India
Interview Type: Phone Interview




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1
of 1 vote

Our class can implement an interface which does have functionality only relevant to client and provide that interface to the client (through which it can only use the object but not delete it). And we will have to make class`s destructor private, so that client can not specifically 'delete' the object. But by doing this we adding a constraint that, object of the class has to be instantiated using 'new'.

- aniteshm11 November 13, 2013 | Flag Reply
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0
of 0 vote

for JAVA:
adding some line of code in finalize method can prevent an object to get deleted.

- PKT November 13, 2013 | Flag Reply
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0
of 0 votes

how?

- .·´¯`·.´¯`·.¸¸.·´¯`·.¸><(((º> November 16, 2013 | Flag
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0
of 0 vote

I think we should clearify some points here: the meaning of client here ? What is meant by delete object ? Is it related to garbage collection or is this question specific to deleting some domain object in application ?

- AJ November 13, 2013 | Flag Reply
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0
of 0 vote

Just override the delete operator and make it private.

- rk November 13, 2013 | Flag Reply
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0
of 0 votes

Spot on! This is tagged C++.

- Subbu. November 14, 2013 | Flag
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0
of 0 vote

Using a Smart pointer

- Shilpa November 22, 2013 | Flag Reply
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0
of 0 vote

Make destructor of class private.
Write a friend function which takes the ownership if deleting object.

#include <iostream>
using namespace std;

class aa
{
	public:
	aa()
	{
		
	}
	friend void del(aa* obj)
	{
	   delete obj;
	}
	private:
	~aa(){}
};

int main() {
	// your code goes here
	aa *a = new aa();
	//delete a;
	del(a);
	return 0;
}

- shivakumar January 21, 2014 | Flag Reply


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