public void CouldZipLagSeries()
{
var sm = new SortedMap <DateTime, double>();
var count = 10000000;
for (int i = 0; i < count; i++)
{
sm.Add(DateTime.UtcNow.Date.AddSeconds(i), i);
}
// slow implementation
var sw = new Stopwatch();
sw.Start();
var zipLag = sm.ZipLag(1, (cur, prev) => cur + prev); //.ToSortedMap();
var c = 1;
foreach (var zl in zipLag)
{
if (c + (c - 1) != zl.Value)
{
throw new ApplicationException();
}
c++;
}
sw.Stop();
Console.WriteLine($"Final c: {c}");
Console.WriteLine("ZipLag, elapsed: {0}, ops: {1}", sw.ElapsedMilliseconds, (int)((double)count / (sw.ElapsedMilliseconds / 1000.0)));
}
public void CouldZipLagSeries() {
var sm = new SortedMap<DateTime, double>();
var count = 10000000;
for (int i = 0; i < count; i++) {
sm.Add(DateTime.UtcNow.Date.AddSeconds(i), i);
}
// slow implementation
var sw = new Stopwatch();
sw.Start();
var zipLag = sm.ZipLag(1, (cur, prev) => cur + prev); //.ToSortedMap();
var c = 1;
foreach (var zl in zipLag) {
if (c + (c - 1) != zl.Value) {
throw new ApplicationException();
}
c++;
}
sw.Stop();
Console.WriteLine($"Final c: {c}");
Console.WriteLine("ZipLag, elapsed: {0}, ops: {1}", sw.ElapsedMilliseconds, (int)((double)count / (sw.ElapsedMilliseconds / 1000.0)));
}
public void CouldCloneZipLagSeries()
{
var count = 1000;
var sm = new SortedMap <int, double>();
for (int i = 0; i < count; i++)
{
sm.Add(i, i);
}
// slow implementation
var sw = new Stopwatch();
sw.Start();
var zipLag = sm.ZipLag(1, (cur, prev) => cur + prev); //.ToSortedMap();
var zc = zipLag.GetCursor();
zc.MoveNext();
var zc2 = zc.Clone();
Assert.AreEqual(zc.CurrentKey, zc2.CurrentKey);
zc.MoveNext();
zc2.MoveNext();
Assert.AreEqual(zc.CurrentKey, zc2.CurrentKey);
zc.MovePrevious();
zc2.MovePrevious();
Assert.AreEqual(zc.CurrentKey, zc2.CurrentKey);
for (int i = 1; i < count; i++)
{
var expected = i + i - 1;
double actual;
var ok = zc.TryGetValue(i, out actual);
Assert.AreEqual(expected, actual);
}
var sm2 = new SortedMap <int, double>();
var zc3 = sm2.ZipLag(1, (cur, prev) => cur + prev).GetCursor();
var t = Task.Run(async() =>
{
var c = 1; // first key is missing because we cannot create state at it
while (await zc3.MoveNext(CancellationToken.None))
{
var expected = c + c - 1;
Assert.AreEqual(expected, zc3.CurrentValue);
c++;
}
});
for (int i = 0; i < count; i++)
{
sm2.Add(i, i);
}
sm2.Complete(); // without it MoveNextAsync will wait forever
t.Wait();
}
public void CouldCloneZipLagSeries() {
var count = 1000;
var sm = new SortedMap<int, double>();
for (int i = 0; i < count; i++) {
sm.Add(i, i);
}
// slow implementation
var sw = new Stopwatch();
sw.Start();
var zipLag = sm.ZipLag(1, (cur, prev) => cur + prev); //.ToSortedMap();
var zc = zipLag.GetCursor();
zc.MoveNext();
var zc2 = zc.Clone();
Assert.AreEqual(zc.CurrentKey, zc2.CurrentKey);
zc.MoveNext();
zc2.MoveNext();
Assert.AreEqual(zc.CurrentKey, zc2.CurrentKey);
zc.MovePrevious();
zc2.MovePrevious();
Assert.AreEqual(zc.CurrentKey, zc2.CurrentKey);
for (int i = 1; i < count; i++)
{
var expected = i + i - 1;
double actual;
var ok = zc.TryGetValue(i, out actual);
Assert.AreEqual(expected, actual);
}
var sm2 = new SortedMap<int, double>();
var zc3 = sm2.ZipLag(1, (cur, prev) => cur + prev).GetCursor();
var t = Task.Run(async () =>
{
var c = 1; // first key is missing because we cannot create state at it
while (await zc3.MoveNext(CancellationToken.None))
{
var expected = c + c - 1;
Assert.AreEqual(expected, zc3.CurrentValue);
c++;
}
});
for (int i = 0; i < count; i++) {
sm2.Add(i, i);
}
sm2.IsMutable = false; // without it MoveNextAsync will wait forever
t.Wait();
}