69 lines
887 B
C#
69 lines
887 B
C#
|
// Testing the default value expressions (14.5.13)
|
||
|
|
|
||
|
|
using System;
|
||
|
|
|
||
|
|
class Foo<T>
|
||
|
|
{
|
||
|
|
T[] t;
|
||
|
|
|
||
|
|
public Foo (int n)
|
||
|
|
{
|
||
|
|
t = new T [n];
|
||
|
|
for (int i = 0; i < n; i++)
|
||
|
|
t [i] = default (T);
|
||
|
|
}
|
||
|
|
|
||
|
|
public void Test ()
|
||
|
|
{
|
||
|
|
X.Print (t [0]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
class Bar<T>
|
||
|
|
{
|
||
|
|
public void Test ()
|
||
|
|
{
|
||
|
|
X.Print (default (X));
|
||
|
|
X.Print (default (T));
|
||
|
|
X.Print (default (S));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
struct S
|
||
|
|
{
|
||
|
|
public readonly string Hello;
|
||
|
|
|
||
|
|
S (string hello)
|
||
|
|
{
|
||
|
|
this.Hello = hello;
|
||
|
|
}
|
||
|
|
|
||
|
|
public override string ToString ()
|
||
|
|
{
|
||
|
|
return String.Format ("S({0})", Hello);
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
class X
|
||
|
|
{
|
||
|
|
public static void Print (object obj)
|
||
|
|
{
|
||
|
|
if (obj == null)
|
||
|
|
Console.WriteLine ("NULL");
|
||
|
|
else
|
||
|
|
Console.WriteLine ("OBJECT: {0} {1}", obj, obj.GetType ());
|
||
|
|
}
|
||
|
|
|
||
|
|
public static void Main ()
|
||
|
|
{
|
||
|
|
Foo<string> a = new Foo<string> (4);
|
||
|
|
a.Test ();
|
||
|
|
|
||
|
|
Bar<int> b = new Bar<int> ();
|
||
|
|
b.Test ();
|
||
|
|
Bar<X> c = new Bar<X> ();
|
||
|
|
c.Test ();
|
||
|
|
}
|
||
|
|
}
|