diff --git a/SwiftyJSONModel/JSONObject.swift b/SwiftyJSONModel/JSONObject.swift
index 43c113e..6d72639 100644
--- a/SwiftyJSONModel/JSONObject.swift
+++ b/SwiftyJSONModel/JSONObject.swift
@@ -87,15 +87,7 @@ public extension JSONObject where PropertyType.RawValue == String {
     }
     
     private func value<T: JSONInitializable>(for keyPath: [PropertyType]) throws -> [T] {
-        return try value(for: keyPath) {
-            try $0.arrayValue().lazy.enumerated().map({ index, json in
-                do {
-                    return try T(json: json)
-                } catch let error as JSONModelError {
-                    throw JSONModelError.invalidValueFor(key: String(index), error)
-                }
-            })
-        }
+        return try value(for: keyPath) { try Array(json: $0) }
     }
     
     // MARK: - Value for keypath - Dictionary
@@ -104,17 +96,7 @@ public extension JSONObject where PropertyType.RawValue == String {
     }
     
     private func value<T: JSONInitializable>(for keyPath: [PropertyType]) throws -> [String: T] {
-        return try value(for: keyPath) {
-            var result: [String: T] = [:]
-            try $0.dictionaryValue().forEach({ key, json in
-                do {
-                    result[key] = try T(json: json)
-                } catch let error as JSONModelError {
-                    throw JSONModelError.invalidValueFor(key: key, error)
-                }
-            })
-            return result
-        }
+        return try value(for: keyPath) { try Dictionary(json: $0) }
     }
     
     // MARK: - Value for keypath - Date
diff --git a/SwiftyJSONModel/JSONTypes.swift b/SwiftyJSONModel/JSONTypes.swift
index 4ce45f0..6799eb3 100644
--- a/SwiftyJSONModel/JSONTypes.swift
+++ b/SwiftyJSONModel/JSONTypes.swift
@@ -102,6 +102,18 @@ public extension Array where Element: JSONRepresentable {
     }
 }
 
+public extension Array where Element: JSONInitializable {
+    public init(json: JSON) throws {
+        self = try json.arrayValue().lazy.enumerated().map({ index, json in
+            do {
+                return try Element(json: json)
+            } catch let error as JSONModelError {
+                throw JSONModelError.invalidValueFor(key: String(index), error)
+            }
+        })
+    }
+}
+
 struct JSONDict<T: JSONRepresentable>: JSONRepresentable {
     let dict: [String: T]
     
@@ -122,6 +134,20 @@ public extension Dictionary where Key == String, Value: JSONRepresentable {
     }
 }
 
+public extension Dictionary where Key == String, Value: JSONInitializable {
+    public init(json: JSON) throws {
+        var result: [String: Value] = [:]
+        try json.dictionaryValue().forEach({ key, json in
+            do {
+                result[key] = try Value(json: json)
+            } catch let error as JSONModelError {
+                throw JSONModelError.invalidValueFor(key: key, error)
+            }
+        })
+        self = result
+    }
+}
+
 public extension Date {
     public func json(with transformer: DateTransformer) -> String {
         return transformer.string(form: self)