From 6bf783e67420d037773e981e745be6ab1fc5819b Mon Sep 17 00:00:00 2001
From: Paul Chote <paul@chote.net>
Date: Fri, 12 Jul 2013 20:20:48 +1200
Subject: [PATCH] Add IEnumerable.RandomOrDefault extension.

---
 OpenRA.FileFormats/Exts.cs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/OpenRA.FileFormats/Exts.cs b/OpenRA.FileFormats/Exts.cs
index af2e5d98ef..30a629c59d 100755
--- a/OpenRA.FileFormats/Exts.cs
+++ b/OpenRA.FileFormats/Exts.cs
@@ -110,6 +110,14 @@ namespace OpenRA
 			return xs[r.Next(xs.Length)];
 		}
 
+		public static T RandomOrDefault<T>(this IEnumerable<T> ts, Thirdparty.Random r)
+		{
+			if (!ts.Any())
+				return default(T);
+
+			return ts.Random(r);
+		}
+
 		public static float Product(this IEnumerable<float> xs)
 		{
 			return xs.Aggregate(1f, (a, x) => a * x);