Merge pull request #1128 from marshall-lee/use_each_with_object

Use each_with_object instead of inject.

Author: dblock

lib/grape/dsl/inside_route.rb

@@ -28,7 +28,7 @@ def declared(params, options = {}, declared_params = nil)
             declared(param || {}, options, declared_params)
           end
         else
-          declared_params.inject(Hashie::Mash.new) do |hash, key|
+          declared_params.each_with_object(Hashie::Mash.new) do |key, hash|
             key = { key => nil } unless key.is_a? Hash
 
             key.each_pair do |parent, children|
@@ -43,8 +43,6 @@ def declared(params, options = {}, declared_params = nil)
                                    params[parent]
                                  end
             end
-
-            hash
           end
         end
       end

lib/grape/formatter/serializable_hash.rb

@@ -21,9 +21,8 @@ def serialize(object)
           elsif object.is_a?(Array) && !object.map { |o| o.respond_to? :serializable_hash }.include?(false)
             object.map(&:serializable_hash)
           elsif object.is_a?(Hash)
-            object.inject({}) do |h, (k, v)|
+            object.each_with_object({}) do |(k, v), h|
               h[k] = serialize(v)
-              h
             end
           else
             object