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mar5_virtualrefactoring.md

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Sometimes instead of virtualizing the differences, it is better to refactor the commonality (into helper functions):

Original Virtual Refactor Subroutines 







int D1::f()
{
    common...;
    specialized...;
    same...;
}
int D2::f()
{
    common...;
    different...;
    same...;
}


int Base::f()
{
    common...;
    vf();
    same...;
}



int D1::vf() override
{

    specialized...;
    
}
int D2::vf() override
{

    different...;
    
}


void common()
{
    common...
}
void same()
{
    same...
}

int D1::f()
{
    common();
    specialized...;
    same();
}
int D2::f()
{
    common();
    different...;
    same();
}

Sometimes.