//* Sample dynamic array - assignment operator variations *

/*
    this_variable = rightHandSide;
        OR
    this_variable.operator=(rightHandSide);
        FRIEND version is doable but less desirable

    most of this applies also to the copy constructor variations
*/

//* efficient in saving memory *
const ADList& ADList::operator=(const ADList & rightHandSide) {
    if (this!=&rightHandSide) {
        delete [] myArray;
        myCapa=rightHandSide.mySize;
        mySize=rightHandSide.mySize;
        myArray=new ElType[myCapa];
        for(size_t i=0; i<mySize; i++) myArray[i]=rightHandSide.myArray[i];
    }
    return(*this);
}

//* preserve the capacity through the assignment *
const ADList& ADList::operator=(const ADList & rightHandSide) {
    if (this!=&rightHandSide) {
        delete [] myArray;
        myCapa=rightHandSide.myCapa;
        mySize=rightHandSide.mySize;
        myArray=new ElType[myCapa];
        for(size_t i=0; i<mySize; i++) myArray[i]=rightHandSide.myArray[i];
    }
    return(*this);
}

//* duplicate including garbage, inefficient but making the copy truly identical *
const ADList& ADList::operator=(const ADList & rightHandSide) {
    if (this!=&rightHandSide) {
        delete [] myArray;
        myCapa=rightHandSide.myCapa;
        mySize=rightHandSide.mySize;
        myArray=new ElType[myCapa];
        for(size_t i=0; i<myCapa; i++) myArray[i]=rightHandSide.myArray[i];
    }
    return(*this);
}

//* optimized both for speed and size - does not resize if enough capacity *
const ADList& ADList::operator=(const ADList & rightHandSide) {
    if (this!=&rightHandSide) {
        if (myCapa<rightHandSide.mySize)
        {
            delete [] myArray;
            myCapa=rightHandSide.mySize;
            myArray=new ElType[myCapa];
        }
        mySize=rightHandSide.mySize;
        for(size_t i=0; i<mySize; i++) myArray[i]=rightHandSide.myArray[i];
    }
    return(*this);
}

//* variation of efficient in saving memory - not cascadable *
void ADList::operator=(const ADList & rightHandSide) {
    if (this!=&rightHandSide) {
        delete [] myArray;
        myCapa=rightHandSide.mySize;
        mySize=rightHandSide.mySize;
        myArray=new ElType[myCapa];
        for(size_t i=0; i<mySize; i++) myArray[i]=rightHandSide.myArray[i];
    }
}
// end of file