static void Main(string[] args)
{
IntList xs = new IntList(7, 9, 13, 20, 25, 26, 28, 30, 1, 2, 3);
xs.Filter(delegate(int x) { return(x % 2 == 0); }).Act(Console.WriteLine);
//Explain what goes on above: How many IntList are there in total, including xs?
// There are a total of 3 IntLists in play on this line of code.
// One inside the Filter method (declared res as an IntList), then the Filter method itself (which is basically a list of lists).
// Then we declare xs as an IntList again in the Main program.
xs.GreaterThan(delegate(int x) { return(x == 0); }).Act(Console.WriteLine);
}
public IntList Filter(IntPredicate p)
{
IntList res = new IntList();
foreach (int i in this)
{
if (p(i))
{
res.Add(i);
}
}
return(res);
}
//Further, use anonymous methods to write an expression that prints only those list elements that are
//greater than or equal to 25.
public IntList GreaterThan(IntPredicate p)
{
IntList result = new IntList();
foreach (int i in this)
{
if (i >= 25)
{
result.Add(i);
}
}
return(result);
}