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| • |
Dynamic
binding delays until run time the binding of a
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member
function to a pointer or reference and requires that
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the
compiler generate code to select the correct member
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function
at run time instead of compile time.
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| • |
Some
implementations create an array of member function
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pointers
for all virtual functions. Each derived class has its
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own
unique array of pointers. Functions that are inherited
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result
in pointers to direct or indirect base class member
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functions.
Functions that are overridden result in pointers to
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the
derived class member functions. Each virtual function
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has
the same index in this table for each derived class. Only
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one
table exists per class that is shared by all objects of a
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class.
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