Added RecurseWhile extensions; renamed IEnumerable<Boolean> extension…

…s; added ConcurrentDictionary<TKey, TValue> extension; updated version info...

Application/iSynaptic.Commons/Collections/Concurrent/ConcurrentDictionaryExtensions.cs

@@ -0,0 +1,41 @@
+// The MIT License
+// 
+// Copyright (c) 2013 Jordan E. Terrell
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+using System.Collections.Concurrent;
+
+namespace iSynaptic.Commons.Collections.Concurrent
+{
+    public static class ConcurrentDictionaryExtensions
+    {
+        public static Maybe<TValue> TryGetValue<TKey, TValue>(this ConcurrentDictionary<TKey, TValue> @this, TKey key)
+        {
+            Guard.NotNull(@this, "@this");
+
+            TValue retreivedValue = default(TValue);
+
+            return @this
+                .ToMaybe()
+                .Where(x => x.TryGetValue(key, out retreivedValue))
+                .Select(x => retreivedValue);
+        }
+    }
+}