Merge pull request #526 from benaadams/generic-get+set

Move generic Get/Set into Interface

Author: davidfowl

src/Microsoft.AspNet.Http.Features/FeatureCollection.cs

@@ -93,6 +93,16 @@ public IEnumerator<KeyValuePair<Type, object>> GetEnumerator()
             }
         }
 
+        public TFeature Get<TFeature>()
+        {
+            return (TFeature)this[typeof(TFeature)];
+        }
+
+        public void Set<TFeature>(TFeature instance)
+        {
+            this[typeof(TFeature)] = instance;
+        }
+
         private class KeyComparer : IEqualityComparer<KeyValuePair<Type, object>>
         {
             public bool Equals(KeyValuePair<Type, object> x, KeyValuePair<Type, object> y)

src/Microsoft.AspNet.Http.Features/FeatureCollectionExtensions.cs

@@ -27,5 +27,19 @@ public interface IFeatureCollection : IEnumerable<KeyValuePair<Type, object>>
         /// <param name="key"></param>
         /// <returns>The requested feature, or null if it is not present.</returns>
         object this[Type key] { get; set; }
+
+        /// <summary>
+        /// Retrieves the requested feature from the collection.
+        /// </summary>
+        /// <typeparam name="TFeature">The feature key.</typeparam>
+        /// <returns>The requested feature, or null if it is not present.</returns>
+        TFeature Get<TFeature>();
+
+        /// <summary>
+        /// Sets the given feature in the collection.
+        /// </summary>
+        /// <typeparam name="TFeature">The feature key.</typeparam>
+        /// <param name="instance">The feature value.</param>
+        void Set<TFeature>(TFeature instance);
     }
 }

src/Microsoft.AspNet.Http.Features/IFeatureCollection.cs

@@ -358,6 +358,16 @@ public void Set(Type key, object value)
             throw new NotSupportedException();
         }
 
+        public TFeature Get<TFeature>()
+        {
+            return (TFeature)this[typeof(TFeature)];
+        }
+
+        public void Set<TFeature>(TFeature instance)
+        {
+            this[typeof(TFeature)] = instance;
+        }
+
         IEnumerator IEnumerable.GetEnumerator()
         {
             return GetEnumerator();