use of deleted functions in c++

Question

Here is a class I've created:

class A{  
private:  
    // some private data members:  
    // 2 const integers  
    // 2 integers  
    // 2 const strings  
public:  
    // C'tor  
    // D'tor  
void f(const A&);  
}

In the constructing of every object of this class there are no (explicit) dynamic allocations, only "primitive" types assignments. (by no explicit dynamic allocations i mean other than how string class handles memory).

when i try this:

void f(const A& item){  
    // do some thing  
*this = item;  
    // do other stuff  
}

i get the following error: "use of deleted function 'A& A::operator=(const A&)' "

now i know that the compiler is supposed to provide me a default assignment operator, and my question is: why the compiler refers to it's default assignment operator as a deleted function? and how do i fix this without assigning all the data member functions manually?

Thanks a lot! Gal

Answer 1

Because you have const members. They cannot be assigned to, so the compiler cannot supply an assignment operator.