dev up-to-speed

Calculations/Logic/EQUITY_Series.cs

@@ -81,7 +81,7 @@ public class EQUITY_Series : Single_TSeries_Indicator {
 			if (_inmarket == 0 && TValue.v == 1) { _longbuy = true; }  //out of market, enter long
 			if (_inmarket == 1 && TValue.v == -1) { _longsell = true; }  //long market, exit long
 
-			//Console.WriteLine($"{TValue.v,3}\t {(_inmarket)} : {_cash,10:f2} + {_units*_price[this.Count-1].v,7:f2} = {_equity-_capital:f2}");
+			//Console.WriteLine($"{TValue.v,3}\t {(_inmarket)} : {_cash,10:f2} + {_units*_price[^1].v,7:f2} = {_equity-_capital:f2}");
 		}
 		inmarket.Add((TValue.t, (double)_inmarket));
 		base.Add((TValue.t, _equity), update, _NaN);

Calculations/_Updated/TSeries.cs

@@ -20,9 +20,11 @@ public class TSeriesEventArgs : EventArgs {
 }
 
 public class TSeries : List<(DateTime t, double v)> {
-	public List<DateTime> t => this.Select(item => item.t).ToList();
-	public List<double> v => this.Select(item => item.v).ToList();
-	public (DateTime t, double v) Last => this[^1];
+	private readonly (DateTime t, double v) Default = (DateTime.MinValue, double.NaN);
+	public IEnumerable<DateTime> t => this.Select(item => item.t);
+	public IEnumerable<double> v => this.Select(item => item.v);
+	public (DateTime t, double v) Last => Count > 0 ? this[^1] : Default;
+
 	public int Length => Count;
 	public string Name { get; set; }
 
@@ -35,13 +37,12 @@ public class TSeries : List<(DateTime t, double v)> {
 	}
 
 	public virtual (DateTime t, double v) Add(double v, bool update = false) {
-		var Value = (t: Count == 0 ? DateTime.Today : this[this.Count-1].t.AddDays(1), v);
-		return Add(Value, update);
+		return Add((t: Count == 0 ? DateTime.Today : this[^1].t.AddDays(1), v), update);
 	}
 
 	public virtual (DateTime t, double v) Add((DateTime t, double v) TValue, bool update = false) {
 		if (update) {
-			this[this.Count-1] = TValue;
+			this[^1] = TValue;
 		}
 		else {
 			base.Add(TValue);