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While defining copy constr & assigment constr, we need to take care
- Argument must be passed by reference
- properly copy pointers (deep copy)

a. deep copy or shallow copy?
b. check for self assignment or not

While defining copy constr & assigment constr, we need to take care
- Argument must be passed by reference
- properly copy pointers (deep copy)

For copy constructor, it has no need to check if it is itself;no return of reference to itself;no need to clean up itself
For copy assignment, it needs to check whether it is itself; return; clean up
Common: deep or shallow? const Reference argument

What about getting an exception in assignment operator

int test() {
return 7;
}

int test() {
return 7;
}

I addition:
1. assure the source objects are not modified - take const references
2. make copy/assignment of the base objects properly

1. Deep copy/shallow copy issues in both.
2. Guard against self assignment in the assignment operator.
3. strong exception safety in the assignment operator. (acquire new resources before deleting old)
4. Call base class's assignment operator if needed.

Also in Assignment operator we need to delete target memory before assigning any new memory