refactor: Simplify TSeries and Dema constructors, and streamline benchmark methods for improved readability

lib/core/tbarseries/tbarseries.cs

@@ -11,12 +11,12 @@ namespace QuanTAlib;
 /// </summary>
 public class TBarSeries : IReadOnlyList<TBar>
 {
-    protected readonly List<long> _t = new();
-    protected readonly List<double> _o = new();
-    protected readonly List<double> _h = new();
-    protected readonly List<double> _l = new();
-    protected readonly List<double> _c = new();
-    protected readonly List<double> _v = new();
+    protected readonly List<long> _t;
+    protected readonly List<double> _o;
+    protected readonly List<double> _h;
+    protected readonly List<double> _l;
+    protected readonly List<double> _c;
+    protected readonly List<double> _v;
 
     public string Name { get; set; } = "Bar";
     public event Action<TBar>? Pub;
@@ -34,13 +34,8 @@ public class TBarSeries : IReadOnlyList<TBar>
     public TSeries C => Close;
     public TSeries V => Volume;
 
-    public TBarSeries()
+    public TBarSeries() : this(0)
     {
-        Open = new TSeries(_t, _o) { Name = "Open" };
-        High = new TSeries(_t, _h) { Name = "High" };
-        Low = new TSeries(_t, _l) { Name = "Low" };
-        Close = new TSeries(_t, _c) { Name = "Close" };
-        Volume = new TSeries(_t, _v) { Name = "Volume" };
     }
 
     public TBarSeries(int capacity)

lib/core/tseries/tseries.cs

@@ -20,10 +20,8 @@ namespace QuanTAlib;
 
     public event Action<TValue>? Pub;
 
-    public TSeries()
+    public TSeries() : this(0)
     {
-        _t = new List<long>();
-        _v = new List<double>();
     }
 
     public TSeries(int capacity)

lib/trends/dema/Dema.cs

@@ -120,7 +120,7 @@ public sealed class Dema : ITValuePublisher
 
     public TSeries Update(TSeries source)
     {
-        if (source.Count == 0) return new TSeries(new List<long>(), new List<double>());
+        if (source.Count == 0) return new TSeries();
 
         int len = source.Count;
         var t = new List<long>(len);

lib/trends/ema/Ema.cs

@@ -149,7 +149,7 @@ public sealed class Ema : ITValuePublisher
 
     public TSeries Update(TSeries source)
     {
-        if (source.Count == 0) return new TSeries(new List<long>(), new List<double>());
+        if (source.Count == 0) return new TSeries();
 
         int len = source.Count;
         var t = new List<long>(len);
@@ -291,7 +291,7 @@ public sealed class Ema : ITValuePublisher
 
         if (source.Length == 0) return;
 
-        State state = State.New();
+        var state = State.New();
         double lastValid = 0;
 
         CalculateCore(source, output, alpha, ref state, ref lastValid);

lib/trends/sma/Sma.cs

@@ -137,7 +137,7 @@ public sealed class Sma : ITValuePublisher
 
     public TSeries Update(TSeries source)
     {
-        if (source.Count == 0) return new TSeries(new List<long>(), new List<double>());
+        if (source.Count == 0) return new TSeries();
 
         int len = source.Count;
         var t = new List<long>(len);

lib/trends/tema/Tema.cs

@@ -129,7 +129,7 @@ public sealed class Tema : ITValuePublisher
 
     public TSeries Update(TSeries source)
     {
-        if (source.Count == 0) return new TSeries(new List<long>(), new List<double>());
+        if (source.Count == 0) return new TSeries();
 
         int len = source.Count;
         var t = new List<long>(len);

lib/trends/trima/Trima.cs

@@ -141,7 +141,7 @@ public sealed class Trima : ITValuePublisher
 
     public TSeries Update(TSeries source)
     {
-        if (source.Count == 0) return new TSeries(new List<long>(), new List<double>());
+        if (source.Count == 0) return new TSeries();
 
         int len = source.Count;
         var t = new List<long>(len);

lib/trends/wma/Wma.cs

@@ -141,7 +141,7 @@ public sealed class Wma : ITValuePublisher
 
     public TSeries Update(TSeries source)
     {
-        if (source.Count == 0) return new TSeries(new List<long>(), new List<double>());
+        if (source.Count == 0) return new TSeries();
 
         int len = source.Count;
         var t = new List<long>(len);