using System;
class MyClass {
}
class Test where T : class {
T obj;
public Test() {
// Here T must be a reference type,
// which can be assigned the value null.
obj = null;
}
}
class MainClass {
public static void Main() {
// The following is OK because MyClass is a class.
Test x = new Test();
// The next line is in error because int is a value type.
// Test y = new Test();
}
}