58 lines
954 B
C#
58 lines
954 B
C#
using System;
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public static class Driver
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{
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delegate void SimpleDelegate ();
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static int error = 0;
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class VirtualDelegate0
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{
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public virtual void OnEvent ()
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{
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Console.WriteLine ("VirtualDelegate0.OnEvent (error!)");
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error = 1;
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}
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}
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class VirtualDelegate1 : VirtualDelegate0
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{
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public override void OnEvent ()
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{
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Console.WriteLine ("VirtualDelegate1.OnEvent");
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}
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}
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class NonVirtualDelegate
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{
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public void OnEvent ()
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{
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Console.WriteLine ("NonVirtualDelegate.OnEvent");
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}
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}
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static bool check (SimpleDelegate d)
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{
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error = 0;
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d ();
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return error == 0;
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}
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public static int Main ()
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{
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SimpleDelegate dv = new SimpleDelegate (new VirtualDelegate1 ().OnEvent);
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SimpleDelegate dnv = new SimpleDelegate (new NonVirtualDelegate ().OnEvent);
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if (!check (dv + dv))
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return 1;
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if (!check (dnv + dv))
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return 2;
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if (!check (dv + dnv))
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return 3;
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if (!check (dnv + dnv))
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return 4;
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return 0;
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}
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}
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