35 lines
368 B
C#
35 lines
368 B
C#
using System;
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class G1<T1, T2>
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where T1 : B
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where T2 : T1
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{
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public static T2 Test1 (B b)
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{
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return (T2)b;
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}
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public static T2 Test2 (A a)
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{
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return (T2)a;
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}
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public static T2 Test3 (dynamic a)
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{
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return (T2)a;
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}
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}
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class B : A
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{
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}
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class A
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{
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static void Main ()
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{
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G1<B, B>.Test1 (new B ());
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G1<B, B>.Test2 (new B ());
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G1<B, B>.Test3 (null);
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}
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} |