=?UTF-8?B?QWxpIMOHZWhyZWxp?= wrote:
> a virtual function like accept() can do the trick
This would require changes in the whole class hierarchy.
But because of
> The actual type of the object is implicitly stored in the
> vtbl of each type.
and in addition, because the statement
| writeln( getC.
On 10/14/2013 02:09 PM, Manfred Nowak wrote:
>> class C{}
>>class C1:C{}
>>// ...
>>class Cn:C{}
>>
>> C getC(){ return new Cn;} // might be extern
>>// and deliver some Ci
>>
>> void visit( C1 fp){}
>> // ...
>> void visit( Cn fp){}
>> void main(){
>>v
> class C{}
> class C1:C{}
> // ...
> class Cn:C{}
>
> C getC(){ return new Cn;} // might be extern
> // and deliver some Ci
>
> void visit( C1 fp){}
> // ...
> void visit( Cn fp){}
> void main(){
> visit( getC); // dispatch?
> }
-manfred
