void _liveVwap_PropertyChanged(object sender, PropertyChangedEventArgs e)
{
// Using Stocktick instead of some custom value just to make it easy
// to re-use the point collection converter
_vwapTicks.Add(new StockSaleTick()
{
Price = _liveVwap.CurrentValue,
Symbol = "VWAP",
Quantity = 0,
TimeStamp = DateTime.Now
});
NotifyPropertyChanged("VwapTicks");
}
public void AddRange_Always_AddsItemsToEndOfList()
{
_target.Add(new Person {
Age = 20
});
_target.Add(new Person {
Age = 20
});
IEnumerable <Person> people = GetPeople();
_target.AddRange(people);
Assert.AreEqual(12, _target.Count);
var lastTenItemsInList = _target.Skip(2);
Assert.IsTrue(people.SequenceEqual(lastTenItemsInList));
}
public void GroupJoin()
{
Random rand = new Random();
//_standardLinqResults = from outerPerson in _outer.AsEnumerable()
// join innerPerson in _inner on outerPerson.Age equals innerPerson.Age into innersMatchingOuterAge
// select new Pair<Person, IEnumerable<Person>>(outerPerson, innersMatchingOuterAge);
Console.WriteLine("Ready");
Console.ReadLine();
int outerItems = 500;
int innerItems = 7000;
ContinuousCollection <NotifyingPerson> inner = new ContinuousCollection <NotifyingPerson>();
ContinuousCollection <NotifyingPerson> outer = new ContinuousCollection <NotifyingPerson>();
var clinqResults = from outerNotifyingPerson in outer
join innerNotifyingPerson in inner on outerNotifyingPerson.Age equals innerNotifyingPerson.Age into innersMatchingOuterAge
//select new KeyValuePair<NotifyingPerson, ReadOnlyContinuousCollection<NotifyingPerson>>(outerNotifyingPerson, innersMatchingOuterAge);
select innersMatchingOuterAge;
TimeIt(1, () =>
{
//List<NotifyingPerson> innerPeople = new List<NotifyingPerson>();
//for (int i = 0; i < innerItems; i++)
//{
// innerPeople.Add(new NotifyingPerson(i.ToString(), i % outerItems));
//}
//inner.AddRange(innerPeople);
for (int i = 0; i < innerItems; i++)
{
inner.Add(new NotifyingPerson(i.ToString(), i % outerItems));
}
for (int i = 0; i < outerItems; i++)
{
outer.Add(new NotifyingPerson(i.ToString(), i));
}
//for (int i = 0; i < outerItems; i++)
//{
// outer.Move(rand.Next(outerItems), rand.Next(outerItems));
//}
//for (int i = outerItems - 1; i >= 0; i--)
//{
// //if ((rand.Next() & 1) == 0)
// if(i % 2 == 0)
// {
// outer.RemoveAt(i);
// }
//}
//for (int i = 0; i < innerItems; i++)
//{
// inner.Move(rand.Next(innerItems), rand.Next(innerItems));
//}
//for (int i = innerItems - 1; i >= 0; i--)
//{
// if ((rand.Next() & 1) == 0)
// {
// inner.RemoveAt(i);
// }
//}
});
Console.WriteLine(clinqResults.Count);
}
void _simulationTimer_Elapsed(object sender, ElapsedEventArgs e)
{
double newPrice;
double oldPrice;
Random rnd = new Random();
double variance = rnd.NextDouble() * 1.50; // stock can change +- 1.50
if (_tickerData.Count > 0)
{
oldPrice = _tickerData.Last().Price;
if (rnd.Next(0, 4) > 1)
{
newPrice = oldPrice - variance;
}
else
{
newPrice = oldPrice + variance;
}
}
else
{
newPrice = 100;
}
// Simulation values.
StockSaleTick newTick = new StockSaleTick()
{
Price = newPrice,
TimeStamp = DateTime.Now,
Symbol = "AAPL",
Quantity = rnd.Next(50) + 50 // QTY range: 50-100
};
_tickerData.Add(newTick);
newTick = new StockSaleTick()
{
Price = newPrice,
TimeStamp = DateTime.Now,
Symbol = "IBM",
Quantity = rnd.Next(50) + 50 // QTY range: 50-100
};
_tickerData.Add(newTick);
NotifyPropertyChanged("GraphWindowTicks");
StockQuoteTick newQuote = new StockQuoteTick()
{
Price = newPrice - (newPrice * 0.05),
Side = QuoteSide.Bid,
Quantity = rnd.Next(50) + 50,
Symbol = "AAPL",
TimeStamp = DateTime.Now
};
_allQuotes.Add(newQuote);
_allQuotes.Add(newQuote);
newQuote = new StockQuoteTick()
{
Price = newPrice + (newPrice * 0.05),
Side = QuoteSide.Ask,
Quantity = rnd.Next(50) + 50,
Symbol = "AAPL",
TimeStamp = DateTime.Now
};
_allQuotes.Add(newQuote);
}
public void FilteringViewAdapter_OnAgeGreaterThan30_ReturnsCollectionWithPersonsOlderThan30()
{
_target = from item in _source
where item.Age > 30
select item;
Assert.AreEqual(2, _target.Count);
Assert.AreEqual("Jordan", _target[0].Name);
Assert.AreEqual("Erb", _target[1].Name);
_source.Add(new Person("John", 12));
Assert.AreEqual(2, _target.Count);
_source.Add(new Person("Tim", 34));
Assert.AreEqual(3, _target.Count);
Assert.AreEqual("Tim", _target[2].Name);
}
