UniRx 에셋 추가

Gameton-06/Assets/Plugins/UniRx/Scripts/InternalUtil/PromiseHelper.cs

@@ -0,0 +1,26 @@
+#if CSHARP_7_OR_LATER || (UNITY_2018_3_OR_NEWER && (NET_STANDARD_2_0 || NET_4_6))
+#pragma warning disable CS1591 // Missing XML comment for publicly visible type or member
+
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace UniRx.InternalUtil
+{
+    internal static class PromiseHelper
+    {
+        internal static void TrySetResultAll<T>(IEnumerable<TaskCompletionSource<T>> source, T value)
+        {
+            var rentArray = source.ToArray(); // better to use Arraypool.
+            var array = rentArray;
+            var len = rentArray.Length;
+            for (int i = 0; i < len; i++)
+            {
+                array[i].TrySetResult(value);
+                array[i] = null;
+            }
+        }
+    }
+}
+
+#endif