static void GenericExplanation()
{
IntegerStack iStack = new IntegerStack(5);
iStack.Push(0);
iStack.Push(100);
iStack.Push(1000);
int element = iStack.Pop();
Console.WriteLine(element);
element = iStack.Pop();
Console.WriteLine(element);
element = iStack.Pop();
Console.WriteLine(element);
GeneralPurposeStack gStack = new GeneralPurposeStack(5);
gStack.Push("ABCD");
gStack.Push("jj");
gStack.Push("kk");
string element1 = (string)gStack.Pop();
GenericStack <int> genericIntStack = new GenericStack <int>(5);
genericIntStack.Push(0);
genericIntStack.Push(1);
int element22 = genericIntStack.Pop();
Console.WriteLine(element);
element = genericIntStack.Pop();
Console.WriteLine(element);
GenericStack <Person> pStack = new GenericStack <Person>(5);
pStack.Push(new Person {
FirstName = "ABCD"
});
pStack.Push(new Person {
FirstName = "DEFG"
});
Person element122 = pStack.Pop();
Console.WriteLine(element122.FirstName);
element122 = pStack.Pop();
Console.WriteLine(element122.FirstName);
}
private static void Contravariance()
{
GenericStack <Employee> empGenericStack = new GenericStack <Employee>(5);
IGenericStackContravariant <Manager> mGS = empGenericStack;
mGS.Push(new Manager());
//IGenericStackPush<Manager> mGenericStack = empGenericStack;
//mGenericStack.Push(new Manager());
}
private static void CoVariance()
{
GenericStack <Employee> empGenericStack = new GenericStack <Employee>(5);
IGenericStackCovariant <Person> personGenericStack = empGenericStack;
Person p = personGenericStack.Pop();
//Employee e = new Employee();
//Person p = e;
//IGenericStackPop<Person> personGenericStack = empGenericStack;
//Person p = personGenericStack.Pop();
}
