RandomExtensions

Reactor/Extensions/RandomExtensions.cs

@@ -0,0 +1,23 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace Reactor.Extensions;
+
+public static class RandomExtensions
+{
+    /// <summary>
+    /// Returns random <typeparamref name="T"/> from <paramref name="input"/> using <paramref name="random"/>
+    /// </summary>
+    public static T? Random<T>(this IEnumerable<T> input, Random random)
+    {
+        var list = input as IList<T> ?? input.ToList();
+        return list.Count == 0 ? default : list[random.Next(0, list.Count)];
+    }
+
+    /// <summary>Returns a random double that is within a specified range.</summary>
+    public static double NextDouble(this Random random, double minValue, double maxValue)
+    {
+        return random.NextDouble() * (maxValue - minValue) + minValue;
+    }
+}