static void Test()
{
double[] array = new double[100];
for (int i = 0; i < array.Length; ++i)
{
array[i] = i;
}
double sum1 = array.Aggregate((total, current) => total + Math.Sqrt(Math.Abs(Math.Sin(current))));
Console.WriteLine("Linq aggregate = " + sum1);
IParallelEnumerable <double> parray = array.AsParallel();
double sum2 = parray.Aggregate
(
0.0,
(total1, current1) => total1 + Math.Sqrt(Math.Abs(Math.Sin(current1))),
(total2, current2) => total2 + current2,
acc => acc
);
Console.WriteLine("Plinq aggregate = " + sum2);
}
public Enumerator(IParallelEnumerable <T> source, Func <T, bool> predicate)
{
items = new List <Item>();
ParameterizedThreadStart threadStart =
(object o) =>
{
Item item = (Item)o;
if (predicate(item.val))
{
item.valid = true;
}
};
foreach (var s in source)
{
var t = new Thread(threadStart);
Item item = new Item(t, s);
items.Add(item);
t.Start(item);
}
itemEnumerator = items.GetEnumerator();
}
public ChessEnumerable(IParallelEnumerable <T> e, Func <T, bool> predicate)
{
this.e = e;
this.predicate = predicate;
}
