From 656890be380997d0f80c5e078dbbf48635f9866b Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@users.sourceforge.net>
Date: Mon, 29 Aug 2022 12:58:39 +0200
Subject: [PATCH] App: modernize C++: replace 'typedef' with 'using'

---
 src/App/Application.h              |  4 ++--
 src/App/Branding.h                 |  2 +-
 src/App/ComplexGeoData.h           |  2 +-
 src/App/Document.cpp               | 24 ++++++++++++------------
 src/App/DocumentObjectGroup.h      |  2 +-
 src/App/DocumentObserver.cpp       |  4 ++--
 src/App/DocumentObserver.h         |  5 +++--
 src/App/Expression.cpp             |  2 +-
 src/App/Expression.h               |  6 +++---
 src/App/Extension.h                |  4 ++--
 src/App/ExtensionContainer.h       |  2 +-
 src/App/ExtensionPython.h          |  4 ++--
 src/App/FeaturePython.h            |  6 +++---
 src/App/GeoFeatureGroupExtension.h |  4 ++--
 src/App/GroupExtension.h           |  4 ++--
 src/App/Link.cpp                   |  2 +-
 src/App/Link.h                     | 24 ++++++++++++------------
 src/App/LinkBaseExtensionPyImp.cpp |  4 ++--
 src/App/MaterialObject.h           |  2 +-
 src/App/MergeDocuments.cpp         |  2 +-
 src/App/MergeDocuments.h           |  2 +-
 src/App/ObjectIdentifier.h         |  8 ++++----
 src/App/OriginGroupExtension.h     |  2 +-
 src/App/Part.h                     |  2 +-
 src/App/Placement.h                |  2 +-
 src/App/Property.h                 | 10 +++++-----
 src/App/PropertyContainerPyImp.cpp |  2 +-
 src/App/PropertyExpressionEngine.h | 10 +++++-----
 src/App/PropertyGeo.h              |  2 +-
 src/App/PropertyLinks.cpp          |  4 ++--
 src/App/PropertyLinks.h            | 10 +++++-----
 src/App/PropertyStandard.h         |  6 +++---
 src/App/Transactions.h             |  2 +-
 33 files changed, 86 insertions(+), 85 deletions(-)

diff --git a/src/App/Application.h b/src/App/Application.h
index 0148a064d5..5542b5961e 100644
--- a/src/App/Application.h
+++ b/src/App/Application.h
@@ -33,8 +33,8 @@
 #include <Base/Parameter.h>
 
 // forward declarations
-typedef struct _object PyObject;
-typedef struct PyMethodDef PyMethodDef;
+using PyObject = struct _object;
+using PyMethodDef = struct PyMethodDef;
 
 namespace Base
 {
diff --git a/src/App/Branding.h b/src/App/Branding.h
index 8685fa0705..c0293f3270 100644
--- a/src/App/Branding.h
+++ b/src/App/Branding.h
@@ -38,7 +38,7 @@ namespace App {
 class Branding
 {
 public:
-    typedef QMap<std::string, std::string> XmlConfig;
+    using XmlConfig = QMap<std::string, std::string>;
     Branding();
 
     bool readFile(const QString& fn);
diff --git a/src/App/ComplexGeoData.h b/src/App/ComplexGeoData.h
index 6ea8a3af1b..e6af43a569 100644
--- a/src/App/ComplexGeoData.h
+++ b/src/App/ComplexGeoData.h
@@ -39,7 +39,7 @@ namespace Base
 class Placement;
 class Rotation;
 template <class _Precision> class BoundBox3;
-typedef BoundBox3<double> BoundBox3d;
+using BoundBox3d = BoundBox3<double>;
 }
 
 namespace Data
diff --git a/src/App/Document.cpp b/src/App/Document.cpp
index fdfdf6cf1e..e793681cba 100644
--- a/src/App/Document.cpp
+++ b/src/App/Document.cpp
@@ -133,7 +133,7 @@ using namespace zipios;
 
 namespace fs = boost::filesystem;
 
-// typedef boost::property<boost::vertex_root_t, DocumentObject* > VertexProperty;
+// using VertexProperty = boost::property<boost::vertex_root_t, DocumentObject* >;
 using DependencyList = boost::adjacency_list <
 boost::vecS,           // class OutEdgeListS  : a Sequence or an AssociativeContainer
 boost::vecS,           // class VertexListS   : a Sequence or a RandomAccessContainer
@@ -307,16 +307,16 @@ void Document::writeDependencyGraphViz(std::ostream &out)
 
 void Document::exportGraphviz(std::ostream& out) const
 {
-    /* Typedefs for a graph with graphviz attributes */
-    typedef std::map<std::string, std::string> GraphvizAttributes;
-    typedef boost::subgraph< adjacency_list<vecS, vecS, directedS,
-            property<vertex_attribute_t, GraphvizAttributes>,
-            property<edge_index_t, int, property<edge_attribute_t, GraphvizAttributes> >,
-            property<graph_name_t, std::string,
-            property<graph_graph_attribute_t,  GraphvizAttributes,
-            property<graph_vertex_attribute_t, GraphvizAttributes,
-            property<graph_edge_attribute_t,   GraphvizAttributes>
-            > > > > > Graph;
+    /* Type defs for a graph with graphviz attributes */
+    using GraphvizAttributes = std::map<std::string, std::string>;
+    using Graph = boost::subgraph< adjacency_list<vecS, vecS, directedS,
+                  property<vertex_attribute_t, GraphvizAttributes>,
+                  property<edge_index_t, int, property<edge_attribute_t, GraphvizAttributes> >,
+                  property<graph_name_t, std::string,
+                  property<graph_graph_attribute_t,  GraphvizAttributes,
+                  property<graph_vertex_attribute_t, GraphvizAttributes,
+                  property<graph_edge_attribute_t,   GraphvizAttributes>
+                  > > > > >;
 
     /**
      * @brief The GraphCreator class
@@ -774,7 +774,7 @@ void Document::exportGraphviz(std::ostream& out) const
 
         }
 
-        typedef std::unordered_multimap<Vertex, Edge> EdgeMap;
+        using EdgeMap = std::unordered_multimap<Vertex, Edge>;
 
         void removeEdges(EdgeMap & in_edges,
                          EdgeMap & out_edges,
diff --git a/src/App/DocumentObjectGroup.h b/src/App/DocumentObjectGroup.h
index d40b027cd4..2e88e7e946 100644
--- a/src/App/DocumentObjectGroup.h
+++ b/src/App/DocumentObjectGroup.h
@@ -49,7 +49,7 @@ public:
     PyObject *getPyObject() override;
 };
 
-typedef App::FeaturePythonT<DocumentObjectGroup> DocumentObjectGroupPython;
+using DocumentObjectGroupPython = App::FeaturePythonT<DocumentObjectGroup>;
 
 
 } //namespace App
diff --git a/src/App/DocumentObserver.cpp b/src/App/DocumentObserver.cpp
index eead2a0769..35930e84ca 100644
--- a/src/App/DocumentObserver.cpp
+++ b/src/App/DocumentObserver.cpp
@@ -561,7 +561,7 @@ public:
     }
 
     App::Document* _document;
-    typedef boost::signals2::scoped_connection Connection;
+    using Connection = boost::signals2::scoped_connection;
     Connection connectApplicationDeletedDocument;
 };
 
@@ -642,7 +642,7 @@ public:
 
     App::DocumentObject* object;
     bool indocument;
-    typedef boost::signals2::scoped_connection Connection;
+    using Connection = boost::signals2::scoped_connection;
     Connection connectApplicationDeletedDocument;
     Connection connectDocumentCreatedObject;
     Connection connectDocumentDeletedObject;
diff --git a/src/App/DocumentObserver.h b/src/App/DocumentObserver.h
index 62a7a9c9f3..e929257e58 100644
--- a/src/App/DocumentObserver.h
+++ b/src/App/DocumentObserver.h
@@ -28,6 +28,7 @@
 #include <boost_signals2.hpp>
 #include <memory>
 #include <set>
+#include <FCGlobal.h>
 
 
 namespace App
@@ -501,7 +502,7 @@ protected:
 
 private:
     App::Document* _document;
-    typedef boost::signals2::connection Connection;
+    using Connection = boost::signals2::connection;
     Connection connectApplicationCreatedDocument;
     Connection connectApplicationDeletedDocument;
     Connection connectApplicationActivateDocument;
@@ -522,7 +523,7 @@ class AppExport DocumentObjectObserver : public DocumentObserver
 {
 
 public:
-    typedef std::set<App::DocumentObject*>::const_iterator const_iterator;
+    using const_iterator = std::set<App::DocumentObject*>::const_iterator;
 
     /// Constructor
     DocumentObjectObserver();
diff --git a/src/App/Expression.cpp b/src/App/Expression.cpp
index e269e8c360..ef790dbc0f 100644
--- a/src/App/Expression.cpp
+++ b/src/App/Expression.cpp
@@ -378,7 +378,7 @@ static inline bool essentiallyInteger(double a, long &l) {
 // without holding Python global lock
 struct PyObjectWrapper {
 public:
-    typedef std::shared_ptr<PyObjectWrapper> Pointer;
+    using Pointer = std::shared_ptr<PyObjectWrapper>;
 
     explicit PyObjectWrapper(PyObject *obj):pyobj(obj) {
         Py::_XINCREF(pyobj);
diff --git a/src/App/Expression.h b/src/App/Expression.h
index 88bad3e2b8..c70d348278 100644
--- a/src/App/Expression.h
+++ b/src/App/Expression.h
@@ -45,13 +45,13 @@ class DocumentObject;
 class Expression;
 class Document;
 
-typedef std::unique_ptr<Expression> ExpressionPtr;
+using ExpressionPtr = std::unique_ptr<Expression>;
 
 AppExport bool isAnyEqual(const App::any &v1, const App::any &v2);
 AppExport Base::Quantity anyToQuantity(const App::any &value, const char *errmsg = nullptr);
 
 // Map of depending objects to a map of depending property name to the full referencing object identifier
-typedef std::map<App::DocumentObject*, std::map<std::string, std::vector<ObjectIdentifier> > > ExpressionDeps;
+using ExpressionDeps = std::map<App::DocumentObject*, std::map<std::string, std::vector<ObjectIdentifier> > >;
 
 class AppExport ExpressionVisitor {
 public:
@@ -172,7 +172,7 @@ public:
 
     virtual void addComponent(Component* component);
 
-    typedef std::vector<Component*> ComponentList;
+    using ComponentList = std::vector<Component*>;
 
     static Component *createComponent(const std::string &n);
     static Component *createComponent(Expression *e1, Expression *e2=nullptr,
diff --git a/src/App/Extension.h b/src/App/Extension.h
index 329b43d5ab..ea6d8b4fe1 100644
--- a/src/App/Extension.h
+++ b/src/App/Extension.h
@@ -146,7 +146,7 @@ template<> void _class_::init(void){\
  *     EXTENSION_ADD_PROPERTY(MyProp, (0)) *
  *     initExtension(MyExtension::getExtensionClassTypeId());
  * }
- * typedef ExtensionPythonT<MyExtension> MyExtensionPython;
+ * using MyExtensionPython = ExtensionPythonT<MyExtension>;
  * @endcode
  *
  * The special python extension type created above is important, as only those python extensions
@@ -212,7 +212,7 @@ template<> void _class_::init(void){\
  * To ensure that your wrapper is used when a extension is created from python the extension type must
  * be exposed as follows:
  * @code
- * typedef ExtensionPythonT<MyExtensionPythonT<MyExtension>> MyExtensionPython;
+ * using MyExtensionPython = ExtensionPythonT<MyExtensionPythonT<MyExtension>>;
  * @endcode
  *
  * This boilerplate is absolutely necessary to allow overridable methods in python and it is the
diff --git a/src/App/ExtensionContainer.h b/src/App/ExtensionContainer.h
index 43132b5c89..a190932976 100644
--- a/src/App/ExtensionContainer.h
+++ b/src/App/ExtensionContainer.h
@@ -114,7 +114,7 @@ class AppExport ExtensionContainer : public App::PropertyContainer
 
 public:
 
-    typedef std::map<Base::Type, App::Extension*>::iterator ExtensionIterator;
+    using ExtensionIterator = std::map<Base::Type, App::Extension*>::iterator;
 
     ExtensionContainer();
     ~ExtensionContainer() override;
diff --git a/src/App/ExtensionPython.h b/src/App/ExtensionPython.h
index 275eedb483..854c09fb51 100644
--- a/src/App/ExtensionPython.h
+++ b/src/App/ExtensionPython.h
@@ -40,7 +40,7 @@ class ExtensionPythonT : public ExtensionT
     EXTENSION_PROPERTY_HEADER(App::ExtensionPythonT<ExtensionT>);
 
 public:
-    typedef ExtensionT Inherited;
+    using Inherited = ExtensionT;
 
     ExtensionPythonT() {
         ExtensionT::m_isPythonExtension = true;
@@ -54,7 +54,7 @@ public:
     ExtensionPythonT& operator= (ExtensionPythonT&&) = delete;
 };
 
-typedef ExtensionPythonT<App::Extension> ExtensionPython;
+using ExtensionPython = ExtensionPythonT<App::Extension>;
 
 // Helper macros to define python extensions
 #define EXTENSION_PROXY_FIRST(function) \
diff --git a/src/App/FeaturePython.h b/src/App/FeaturePython.h
index 9223a7bf28..44734e6868 100644
--- a/src/App/FeaturePython.h
+++ b/src/App/FeaturePython.h
@@ -150,7 +150,7 @@ private:
         FlagMax,
     };
 
-    typedef std::bitset<FlagMax> Flags;
+    using Flags = std::bitset<FlagMax>;
     mutable Flags _Flags;
 
 public:
@@ -355,8 +355,8 @@ private:
 };
 
 // Special Feature-Python classes
-typedef FeaturePythonT<DocumentObject> FeaturePython;
-typedef FeaturePythonT<GeoFeature    > GeometryPython;
+using FeaturePython  = FeaturePythonT<DocumentObject>;
+using GeometryPython = FeaturePythonT<GeoFeature    >;
 
 } //namespace App
 
diff --git a/src/App/GeoFeatureGroupExtension.h b/src/App/GeoFeatureGroupExtension.h
index 3069846a20..621145e1b5 100644
--- a/src/App/GeoFeatureGroupExtension.h
+++ b/src/App/GeoFeatureGroupExtension.h
@@ -50,7 +50,7 @@ namespace App
  */
 class AppExport GeoFeatureGroupExtension : public App::GroupExtension
 {
-    typedef App::GroupExtension inherited;
+    using inherited = App::GroupExtension;
     EXTENSION_PROPERTY_HEADER_WITH_OVERRIDE(App::GeoFeatureGroupExtension);
 
 public:
@@ -138,7 +138,7 @@ private:
  
 };
 
-typedef ExtensionPythonT<GroupExtensionPythonT<GeoFeatureGroupExtension>> GeoFeatureGroupExtensionPython;
+using GeoFeatureGroupExtensionPython = ExtensionPythonT<GroupExtensionPythonT<GeoFeatureGroupExtension>>;
 
 
 } //namespace App
diff --git a/src/App/GroupExtension.h b/src/App/GroupExtension.h
index 05588df0b7..189a8ea93b 100644
--- a/src/App/GroupExtension.h
+++ b/src/App/GroupExtension.h
@@ -38,7 +38,7 @@ class GroupExtensionPy;
 class AppExport GroupExtension : public DocumentObjectExtension
 {
     EXTENSION_PROPERTY_HEADER_WITH_OVERRIDE(App::GroupExtension);
-    typedef DocumentObjectExtension inherited;
+    using inherited = DocumentObjectExtension;
 
 public:
     /// Constructor
@@ -160,7 +160,7 @@ public:
     };
 };
 
-typedef ExtensionPythonT<GroupExtensionPythonT<GroupExtension>> GroupExtensionPython;
+using GroupExtensionPython = ExtensionPythonT<GroupExtensionPythonT<GroupExtension>>;
 
 } //namespace App
 
diff --git a/src/App/Link.cpp b/src/App/Link.cpp
index 8663439018..b638591f1c 100644
--- a/src/App/Link.cpp
+++ b/src/App/Link.cpp
@@ -49,7 +49,7 @@ using namespace App;
 using namespace Base;
 namespace bp = boost::placeholders;
 
-typedef boost::iterator_range<const char*> CharRange;
+using CharRange = boost::iterator_range<const char*>;
 
 ////////////////////////////////////////////////////////////////////////
 
diff --git a/src/App/Link.h b/src/App/Link.h
index 71b7d74d8b..faa1ecdb3a 100644
--- a/src/App/Link.h
+++ b/src/App/Link.h
@@ -51,7 +51,7 @@ namespace App
 class AppExport LinkBaseExtension : public App::DocumentObjectExtension
 {
     EXTENSION_PROPERTY_HEADER_WITH_OVERRIDE(App::LinkExtension);
-    typedef App::DocumentObjectExtension inherited;
+    using inherited = App::DocumentObjectExtension;
 
 public:
     LinkBaseExtension();
@@ -217,7 +217,7 @@ public:
 
     virtual const std::vector<PropInfo> &getPropertyInfo() const;
 
-    typedef std::map<std::string, PropInfo> PropInfoMap;
+    using PropInfoMap = std::map<std::string, PropInfo>;
     virtual const PropInfoMap &getPropertyInfoMap() const;
 
     enum LinkCopyOnChangeType {
@@ -313,7 +313,7 @@ public:
     DocumentObject *getTrueLinkedObject(bool recurse,
             Base::Matrix4D *mat=nullptr,int depth=0, bool noElement=false) const;
 
-    typedef std::map<const Property*,std::pair<LinkBaseExtension*,int> > LinkPropMap;
+    using LinkPropMap = std::map<const Property*,std::pair<LinkBaseExtension*,int> >;
 
     bool hasPlacement() const {
         return getLinkPlacementProperty() || getPlacementProperty();
@@ -398,14 +398,14 @@ protected:
 
 ///////////////////////////////////////////////////////////////////////////
 
-typedef ExtensionPythonT<LinkBaseExtension> LinkBaseExtensionPython;
+using LinkBaseExtensionPython = ExtensionPythonT<LinkBaseExtension>;
 
 ///////////////////////////////////////////////////////////////////////////
 
 class AppExport LinkExtension : public LinkBaseExtension
 {
     EXTENSION_PROPERTY_HEADER_WITH_OVERRIDE(App::LinkExtension);
-    typedef LinkBaseExtension inherited;
+    using inherited = LinkBaseExtension;
 
 public:
     LinkExtension();
@@ -509,14 +509,14 @@ public:
 
 ///////////////////////////////////////////////////////////////////////////
 
-typedef ExtensionPythonT<LinkExtension> LinkExtensionPython;
+using LinkExtensionPython = ExtensionPythonT<LinkExtension>;
 
 ///////////////////////////////////////////////////////////////////////////
 
 class AppExport Link : public App::DocumentObject, public App::LinkExtension
 {
     PROPERTY_HEADER_WITH_EXTENSIONS(App::Link);
-    typedef App::DocumentObject inherited;
+    using inherited = App::DocumentObject;
 public:
 
 #define LINK_PARAMS_LINK \
@@ -556,13 +556,13 @@ public:
     bool canLinkProperties() const override;
 };
 
-typedef App::FeaturePythonT<Link> LinkPython;
+using LinkPython = App::FeaturePythonT<Link>;
 
 ///////////////////////////////////////////////////////////////////////////
 
 class AppExport LinkElement : public App::DocumentObject, public App::LinkBaseExtension {
     PROPERTY_HEADER_WITH_EXTENSIONS(App::LinkElement);
-    typedef App::DocumentObject inherited;
+    using inherited = App::DocumentObject;
 public:
 
 #define LINK_PARAMS_ELEMENT \
@@ -599,13 +599,13 @@ public:
     }
 };
 
-typedef App::FeaturePythonT<LinkElement> LinkElementPython;
+using LinkElementPython = App::FeaturePythonT<LinkElement>;
 
 ///////////////////////////////////////////////////////////////////////////
 
 class AppExport LinkGroup : public App::DocumentObject, public App::LinkBaseExtension {
     PROPERTY_HEADER_WITH_EXTENSIONS(App::LinkGroup);
-    typedef App::DocumentObject inherited;
+    using inherited = App::DocumentObject;
 public:
 
 #define LINK_PARAMS_GROUP \
@@ -630,7 +630,7 @@ public:
     }
 };
 
-typedef App::FeaturePythonT<LinkGroup> LinkGroupPython;
+using LinkGroupPython = App::FeaturePythonT<LinkGroup>;
 
 } //namespace App
 
diff --git a/src/App/LinkBaseExtensionPyImp.cpp b/src/App/LinkBaseExtensionPyImp.cpp
index f84ff7a7bb..77098254e6 100644
--- a/src/App/LinkBaseExtensionPyImp.cpp
+++ b/src/App/LinkBaseExtensionPyImp.cpp
@@ -40,8 +40,8 @@ std::string LinkBaseExtensionPy::representation() const
     return str.str();
 }
 
-typedef std::map<std::string, std::pair<int,Property*> > PropTmpMap;
-typedef std::map<std::string, Property*> PropMap;
+using PropTmpMap = std::map<std::string, std::pair<int,Property*> >;
+using PropMap = std::map<std::string, Property*>;
 
 static bool getProperty(PropTmpMap &props, const LinkBaseExtension::PropInfoMap &infoMap,
         const PropMap &propMap, PyObject *key, PyObject *value)
diff --git a/src/App/MaterialObject.h b/src/App/MaterialObject.h
index 67f15a2e1a..8a1aafbf54 100644
--- a/src/App/MaterialObject.h
+++ b/src/App/MaterialObject.h
@@ -50,7 +50,7 @@ public:
 
 };
 
-typedef App::FeaturePythonT<MaterialObject> MaterialObjectPython;
+using MaterialObjectPython = App::FeaturePythonT<MaterialObject>;
 
 
 } //namespace App
diff --git a/src/App/MergeDocuments.cpp b/src/App/MergeDocuments.cpp
index 81c365a2b3..177d8996e0 100644
--- a/src/App/MergeDocuments.cpp
+++ b/src/App/MergeDocuments.cpp
@@ -66,7 +66,7 @@ protected:
 
 private:
     std::map<std::string, std::string>& nameMap;
-    typedef std::pair<std::string, std::string> PropertyTag;
+    using PropertyTag = std::pair<std::string, std::string>;
     std::stack<PropertyTag> propertyStack;
 };
 }
diff --git a/src/App/MergeDocuments.h b/src/App/MergeDocuments.h
index 14e1ceca35..cdcae9308e 100644
--- a/src/App/MergeDocuments.h
+++ b/src/App/MergeDocuments.h
@@ -59,7 +59,7 @@ private:
     App::Document* appdoc;
     std::vector<App::DocumentObject*> objects;
     std::map<std::string, std::string> nameMap;
-    typedef boost::signals2::connection Connection;
+    using Connection = boost::signals2::connection;
     Connection connectExport;
     Connection connectImport;
 };
diff --git a/src/App/ObjectIdentifier.h b/src/App/ObjectIdentifier.h
index 133728e909..2b3c2c5498 100644
--- a/src/App/ObjectIdentifier.h
+++ b/src/App/ObjectIdentifier.h
@@ -346,7 +346,7 @@ public:
     const std::string &getSubObjectName(bool newStyle) const;
     const std::string &getSubObjectName() const;
 
-    typedef std::map<std::pair<App::DocumentObject*,std::string>,std::string> SubNameMap;
+    using SubNameMap = std::map<std::pair<App::DocumentObject*,std::string>,std::string>;
     void importSubNames(const SubNameMap &subNameMap);
 
     bool updateLabelReference(App::DocumentObject *, const std::string &, const char *);
@@ -363,7 +363,7 @@ public:
      * the property may not exist at the time this ObjectIdentifier is
      * constructed.
      */
-    typedef std::map<App::DocumentObject *, std::set<std::string> > Dependencies;
+    using Dependencies = std::map<App::DocumentObject *, std::set<std::string> >;
 
     /** Get dependencies of this object identifier
      *
@@ -516,8 +516,8 @@ namespace std {
 
 template<>
 struct hash<App::ObjectIdentifier> {
-    typedef App::ObjectIdentifier argument_type;
-    typedef std::size_t result_type;
+    using argument_type = App::ObjectIdentifier;
+    using result_type = std::size_t;
     inline result_type operator()(argument_type const& s) const {
         return s.hash();
     }
diff --git a/src/App/OriginGroupExtension.h b/src/App/OriginGroupExtension.h
index f5ea25ad43..6ec3ef9544 100644
--- a/src/App/OriginGroupExtension.h
+++ b/src/App/OriginGroupExtension.h
@@ -80,7 +80,7 @@ protected:
     void onExtendedUnsetupObject () override;
 };
 
-typedef ExtensionPythonT<GroupExtensionPythonT<OriginGroupExtension>> OriginGroupExtensionPython;
+using OriginGroupExtensionPython = ExtensionPythonT<GroupExtensionPythonT<OriginGroupExtension>>;
 
 } /* App */
 
diff --git a/src/App/Part.h b/src/App/Part.h
index f217bc67c5..a40212fd72 100644
--- a/src/App/Part.h
+++ b/src/App/Part.h
@@ -98,7 +98,7 @@ public:
     PyObject *getPyObject() override;
 };
 
-//typedef App::FeaturePythonT<Part> PartPython;
+//using PartPython = App::FeaturePythonT<Part>;
 
 } //namespace App
 
diff --git a/src/App/Placement.h b/src/App/Placement.h
index 8d371515c6..39b18f9920 100644
--- a/src/App/Placement.h
+++ b/src/App/Placement.h
@@ -48,7 +48,7 @@ public:
 
 
 };
-typedef App::FeaturePythonT<App::Placement> PlacementPython;
+using PlacementPython = App::FeaturePythonT<App::Placement>;
 
 
 } //namespace App
diff --git a/src/App/Property.h b/src/App/Property.h
index d10b7994e4..dd7d879eea 100644
--- a/src/App/Property.h
+++ b/src/App/Property.h
@@ -474,11 +474,11 @@ class PropertyListsT: public ParentT
                     , public AtomicPropertyChangeInterface<PropertyListsT<T,ListT,ParentT> >
 {
 public:
-    typedef typename ListT::const_reference const_reference;
-    typedef ListT list_type;
-    typedef ParentT parent_type;
-    typedef typename AtomicPropertyChangeInterface<
-        PropertyListsT<T,ListT,ParentT> >::AtomicPropertyChange atomic_change;
+    using const_reference = typename ListT::const_reference;
+    using list_type = ListT;
+    using parent_type = ParentT;
+    using atomic_change = typename AtomicPropertyChangeInterface<
+        PropertyListsT<T,ListT,ParentT> >::AtomicPropertyChange;
 
     friend atomic_change;
 
diff --git a/src/App/PropertyContainerPyImp.cpp b/src/App/PropertyContainerPyImp.cpp
index 03e84a5d59..4aa2304d42 100644
--- a/src/App/PropertyContainerPyImp.cpp
+++ b/src/App/PropertyContainerPyImp.cpp
@@ -550,7 +550,7 @@ PyObject* PropertyContainerPy::restorePropertyContent(PyObject *args)
 
     //check if it really is a buffer
     try {
-        typedef boost::iostreams::basic_array_source<char> Device;
+        using Device = boost::iostreams::basic_array_source<char>;
         boost::iostreams::stream<Device> stream((char*)buf.buf, buf.len);
         prop->restoreFromStream(stream);
     }
diff --git a/src/App/PropertyExpressionEngine.h b/src/App/PropertyExpressionEngine.h
index 36ea7c189b..efb54a7479 100644
--- a/src/App/PropertyExpressionEngine.h
+++ b/src/App/PropertyExpressionEngine.h
@@ -77,7 +77,7 @@ public:
     Property *CopyOnLinkReplace(const App::DocumentObject *parent,
                         App::DocumentObject *oldObj, App::DocumentObject *newObj) const override;
 
-    typedef std::function<std::string (const App::ObjectIdentifier & path, std::shared_ptr<const App::Expression> expr)> ValidatorFunc;
+    using ValidatorFunc = std::function<std::string (const App::ObjectIdentifier & path, std::shared_ptr<const App::Expression> expr)>;
 
     /**
      * @brief The ExpressionInfo struct encapsulates an expression.
@@ -176,13 +176,13 @@ protected:
 
 private:
 
-    typedef boost::adjacency_list< boost::listS, boost::vecS, boost::directedS > DiGraph;
-    typedef std::pair<int, int> Edge;
+    using DiGraph = boost::adjacency_list< boost::listS, boost::vecS, boost::directedS >;
+    using Edge = std::pair<int, int>;
     // Note: use std::map instead of unordered_map to keep the binding order stable
     #if defined(FC_OS_MACOSX) || defined(FC_OS_BSD)
-    typedef std::map<App::ObjectIdentifier, ExpressionInfo> ExpressionMap;
+    using ExpressionMap = std::map<App::ObjectIdentifier, ExpressionInfo>;
     #else
-    typedef std::map<const App::ObjectIdentifier, ExpressionInfo> ExpressionMap;
+    using ExpressionMap = std::map<const App::ObjectIdentifier, ExpressionInfo>;
     #endif
 
     std::vector<App::ObjectIdentifier> computeEvaluationOrder(ExecuteOption option);
diff --git a/src/App/PropertyGeo.h b/src/App/PropertyGeo.h
index a9268fdea4..62d1f1299c 100644
--- a/src/App/PropertyGeo.h
+++ b/src/App/PropertyGeo.h
@@ -199,7 +199,7 @@ class AppExport PropertyVectorList: public PropertyListsT<Base::Vector3d>
 {
     TYPESYSTEM_HEADER_WITH_OVERRIDE();
 
-    typedef PropertyListsT<Base::Vector3d> inherited;
+    using inherited = PropertyListsT<Base::Vector3d>;
 
 public:
     /**
diff --git a/src/App/PropertyLinks.cpp b/src/App/PropertyLinks.cpp
index 1bc29a722e..c0ae427953 100644
--- a/src/App/PropertyLinks.cpp
+++ b/src/App/PropertyLinks.cpp
@@ -2519,14 +2519,14 @@ bool PropertyLinkSubList::adjustLink(const std::set<App::DocumentObject*> &inLis
 // has now been changed to simply use the absoluteFilePath(), and rely on user
 // to be aware of possible duplicated file location. The reason being that
 // some user (especially Linux user) use symlink to organize file tree.
-typedef std::map<QString,DocInfoPtr> DocInfoMap;
+using DocInfoMap = std::map<QString, DocInfoPtr>;
 DocInfoMap _DocInfoMap;
 
 class App::DocInfo :
     public std::enable_shared_from_this<App::DocInfo>
 {
 public:
-    typedef boost::signals2::scoped_connection Connection;
+    using Connection = boost::signals2::scoped_connection;
     Connection connFinishRestoreDocument;
     Connection connPendingReloadDocument;
     Connection connDeleteDocument;
diff --git a/src/App/PropertyLinks.h b/src/App/PropertyLinks.h
index 133908f4d2..a305e94fda 100644
--- a/src/App/PropertyLinks.h
+++ b/src/App/PropertyLinks.h
@@ -40,7 +40,7 @@ class DocumentObject;
 class Document;
 
 class DocInfo;
-typedef std::shared_ptr<DocInfo> DocInfoPtr;
+using DocInfoPtr = std::shared_ptr<DocInfo>;
 
 class PropertyXLink;
 
@@ -99,7 +99,7 @@ class AppExport PropertyLinkBase : public Property, public ScopedLink
 {
     TYPESYSTEM_HEADER_WITH_OVERRIDE();
 public:
-    typedef std::pair<std::string,std::string> ShadowSub;
+    using ShadowSub = std::pair<std::string,std::string>;
 
     PropertyLinkBase();
     ~PropertyLinkBase() override;
@@ -674,7 +674,7 @@ class AppExport PropertyLinkList :
     public PropertyListsT<DocumentObject*,std::vector<DocumentObject*>, PropertyLinkListBase>
 {
     TYPESYSTEM_HEADER_WITH_OVERRIDE();
-    typedef PropertyListsT<DocumentObject*,std::vector<DocumentObject*>,PropertyLinkListBase> inherited;
+    using inherited = PropertyListsT<DocumentObject*,std::vector<DocumentObject*>,PropertyLinkListBase>;
 
 public:
     /**
@@ -899,7 +899,7 @@ class AppExport PropertyLinkSubList : public PropertyLinkBase
     TYPESYSTEM_HEADER_WITH_OVERRIDE();
 
 public:
-    typedef std::pair<DocumentObject*, std::vector<std::string> > SubSet;
+    using SubSet = std::pair<DocumentObject*, std::vector<std::string> >;
     /**
      * A constructor.
      * A more elaborate description of the constructor.
@@ -1198,7 +1198,7 @@ class AppExport PropertyXLinkSubList: public PropertyLinkBase
 {
     TYPESYSTEM_HEADER_WITH_OVERRIDE();
 
-    typedef typename AtomicPropertyChangeInterface<PropertyXLinkSubList>::AtomicPropertyChange atomic_change;
+    using atomic_change = typename AtomicPropertyChangeInterface<PropertyXLinkSubList>::AtomicPropertyChange;
     friend atomic_change;
 
 public:
diff --git a/src/App/PropertyStandard.h b/src/App/PropertyStandard.h
index 4a6a9e7b76..cd5d8755f3 100644
--- a/src/App/PropertyStandard.h
+++ b/src/App/PropertyStandard.h
@@ -798,7 +798,7 @@ public:
 class AppExport PropertyStringList: public PropertyListsT<std::string>
 {
     TYPESYSTEM_HEADER_WITH_OVERRIDE();
-    typedef PropertyListsT<std::string> inherited;
+    using inherited = PropertyListsT<std::string>;
 
 public:
 
@@ -891,7 +891,7 @@ private:
 class AppExport PropertyBoolList : public PropertyListsT<bool,boost::dynamic_bitset<> >
 {
     TYPESYSTEM_HEADER_WITH_OVERRIDE();
-    typedef PropertyListsT<bool,boost::dynamic_bitset<> > inherited;
+    using inherited = PropertyListsT<bool, boost::dynamic_bitset<> >;
 
 public:
     PropertyBoolList();
@@ -1105,7 +1105,7 @@ protected:
  */
 class AppExport PropertyPersistentObject: public PropertyString {
     TYPESYSTEM_HEADER_WITH_OVERRIDE();
-    typedef PropertyString inherited;
+    using inherited = PropertyString;
 public:
     PyObject *getPyObject() override;
     void setValue(const char* type) override;
diff --git a/src/App/Transactions.h b/src/App/Transactions.h
index 0d0165a55b..c0cb264135 100644
--- a/src/App/Transactions.h
+++ b/src/App/Transactions.h
@@ -89,7 +89,7 @@ public:
 
 private:
     int transID;
-    typedef std::pair<const TransactionalObject*, TransactionObject*> Info;
+    using Info = std::pair<const TransactionalObject*, TransactionObject*>;
     bmi::multi_index_container<
         Info,
         bmi::indexed_by<