Eager Replication (2)(pre-requisite: cross references exist)

Class AA {

int i // initial role

char s[20] // final role

...}

Class BB {

int gi // ghost copy

char gs[20] // original

...}

AA::set(i, v)

{ i = v;

BB.gi = i;

}

BB::set(gs, w)

{ gs = word;

AA::s = gs;

} // #include String.h assumed;

// String& gs,w; = overloaded

Pair <i, gi> in initial roles:

Pair <s, gs> after s

and gs swap roles:

i: active

gi: ghost

s: ghost

gs: active

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