add EzyDictionaries.cs

Author: tvd12

util/EzyDictionaries.cs

@@ -0,0 +1,20 @@
+using System.Collections.Generic;
+
+namespace com.tvd12.ezyfoxserver.client.util
+{
+	public sealed class EzyDictionaries
+	{
+		private EzyDictionaries()
+        {
+        }
+
+		public static V getOrDefault<K, V>(
+			IDictionary<K, V> dict,
+			K key,
+			V defaultValue
+		)
+        {
+			return dict.ContainsKey(key) ? dict[key] : defaultValue;
+        }
+	}
+}