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Fist of all, I will use virtual and override
for example, base class A has method A.do(), inherited class B has B.do() which overrides A’s.
if I call (B as A).do(), which do() would it execute?
or, if there is a method void mymethod(A a) {a.do()}, now I call it by B b; mymethod(b), would it execute b.do()?
The most top override method always will be called, i.e.
b.Do()or(b as A).Do()or((A)b).Do()will callB.Do().I don’t know a way how to call a base method from child class if child class overrides it.