Bind form to a list as a complex property

Author: Søren Trudsø Mahon

src/Nancy/Extensions/CollectionExtensions.cs

@@ -84,5 +84,20 @@ public static IEnumerable<TSource> DistinctBy<TSource, TKey>(this IEnumerable<TS
                 }
             }
         }
+
+        /// <summary>
+        /// Tries to get value from dictionary
+        /// </summary>
+        /// <typeparam name="TKey"></typeparam>
+        /// <typeparam name="TValue"></typeparam>
+        /// <param name="source">The <see cref="IDictionary{TKey,TValue}"/> instance to get value from.</param>
+        /// <param name="key">The key to lookup.</param>
+        /// <returns></returns>
+        public static TValue GetValueOrDefault<TKey, TValue>(this IDictionary<TKey, TValue> source, TKey key)
+        {
+            TValue result;
+            source.TryGetValue(key, out result);
+            return result;
+        }
     }
 }

src/Nancy/Extensions/TypeExtensions.cs

@@ -45,6 +45,16 @@ public static Assembly GetAssembly(this Type source)
             return source.GetTypeInfo().Assembly;
         }
 
+        /// <summary>
+        /// Checks if a type is array, collection or enumerable
+        /// </summary>
+        /// <param name="source">The type to check.</param>
+        /// <returns></returns>
+        public static bool IsCollectionOrArrayOrEnumerable(this Type source)
+        {
+            return source.IsArray() || source.IsCollection() || source.IsEnumerable();
+        }
+
         /// <summary>
         /// Checks if a type is an array or not
         /// </summary>