3 files changed, 21 insertions, 24 deletions

diff --git a/src/categories.cpp b/src/categories.cpp
index 1e2997fb..c1aa756f 100644
--- a/src/categories.cpp
+++ b/src/categories.cpp
@@ -162,16 +162,14 @@ void CategoryFactory::reset()
 
 void CategoryFactory::setParents()
 {
-  for (std::vector<Category>::iterator iter = m_Categories.begin();
-       iter != m_Categories.end(); ++iter) {
-    iter->setHasChildren(false);
+  for (auto& category : m_Categories) {
+    category.setHasChildren(false);
   }
 
-  for (std::vector<Category>::const_iterator categoryIter = m_Categories.begin();
-       categoryIter != m_Categories.end(); ++categoryIter) {
-    if (categoryIter->parentID() != 0) {
+  for (const auto& category : m_Categories) {
+    if (category.parentID() != 0) {
       std::map<int, unsigned int>::const_iterator iter =
-          m_IDMap.find(categoryIter->parentID());
+          m_IDMap.find(category.parentID());
       if (iter != m_IDMap.end()) {
         m_Categories[iter->second].setHasChildren(true);
       }
@@ -195,17 +193,16 @@ void CategoryFactory::saveCategories()
   }
 
   categoryFile.resize(0);
-  for (std::vector<Category>::const_iterator iter = m_Categories.begin();
-       iter != m_Categories.end(); ++iter) {
-    if (iter->ID() == 0) {
+  for (const auto& category : m_Categories) {
+    if (category.ID() == 0) {
       continue;
     }
     QByteArray line;
-    line.append(QByteArray::number(iter->ID()))
+    line.append(QByteArray::number(category.ID()))
         .append("|")
-        .append(iter->name().toUtf8())
+        .append(category.name().toUtf8())
         .append("|")
-        .append(QByteArray::number(iter->parentID()))
+        .append(QByteArray::number(category.parentID()))
         .append("\n");
     categoryFile.write(line);
   }
@@ -219,11 +216,11 @@ void CategoryFactory::saveCategories()
   }
 
   nexusMapFile.resize(0);
-  for (auto iter = m_NexusMap.begin(); iter != m_NexusMap.end(); ++iter) {
+  for (const auto& nexMap : m_NexusMap) {
     QByteArray line;
-    line.append(QByteArray::number(iter->second.categoryID())).append("|");
-    line.append(iter->second.name().toUtf8()).append("|");
-    line.append(QByteArray::number(iter->second.ID())).append("\n");
+    line.append(QByteArray::number(nexMap.second.categoryID())).append("|");
+    line.append(nexMap.second.name().toUtf8()).append("|");
+    line.append(QByteArray::number(nexMap.second.ID())).append("\n");
     nexusMapFile.write(line);
   }
   nexusMapFile.close();
@@ -269,7 +266,7 @@ void CategoryFactory::addCategory(int id, const QString& name,
                                   const std::vector<NexusCategory>& nexusCats,
                                   int parentID)
 {
-  for (auto nexusCat : nexusCats) {
+  for (const auto& nexusCat : nexusCats) {
     m_NexusMap.insert_or_assign(nexusCat.ID(), nexusCat);
     m_NexusMap.at(nexusCat.ID()).setCategoryID(id);
   }
@@ -279,9 +276,9 @@ void CategoryFactory::addCategory(int id, const QString& name,
 }
 
 void CategoryFactory::setNexusCategories(
-    std::vector<CategoryFactory::NexusCategory>& nexusCats)
+    const std::vector<CategoryFactory::NexusCategory>& nexusCats)
 {
-  for (auto nexusCat : nexusCats) {
+  for (const auto& nexusCat : nexusCats) {
     m_NexusMap.emplace(nexusCat.ID(), nexusCat);
   }
 
diff --git a/src/categories.h b/src/categories.h
index a6ee2e24..15b9bbc1 100644
--- a/src/categories.h
+++ b/src/categories.h
@@ -92,7 +92,7 @@ public:
     Category(int sortValue, int id, const QString name, int parentID,
              std::vector<NexusCategory> nexusCats)
         : m_SortValue(sortValue), m_ID(id), m_Name(name), m_HasChildren(false),
-          m_ParentID(parentID), m_NexusCats(nexusCats)
+          m_ParentID(parentID), m_NexusCats(std::move(nexusCats))
     {}
 
     friend bool operator<(const Category& LHS, const Category& RHS)
@@ -132,7 +132,7 @@ public:
    **/
   void saveCategories();
 
-  void setNexusCategories(std::vector<CategoryFactory::NexusCategory>& nexusCats);
+  void setNexusCategories(const std::vector<CategoryFactory::NexusCategory>& nexusCats);
 
   void refreshNexusCategories(CategoriesDialog* dialog);
 
diff --git a/src/categoriesdialog.cpp b/src/categoriesdialog.cpp
index b770fa0b..21523e85 100644
--- a/src/categoriesdialog.cpp
+++ b/src/categoriesdialog.cpp
@@ -234,7 +234,7 @@ void CategoriesDialog::fillTable()
     table->setItem(row, 3, nexusCatItem.take());
   }
 
-  for (auto nexusCat : categories.m_NexusMap) {
+  for (const auto& nexusCat : categories.m_NexusMap) {
     QScopedPointer<QListWidgetItem> nexusItem(new QListWidgetItem());
     nexusItem->setData(Qt::DisplayRole, nexusCat.second.name());
     nexusItem->setData(Qt::UserRole, nexusCat.second.ID());
@@ -355,7 +355,7 @@ void CategoriesDialog::nxmGameInfoAvailable(QString gameName, QVariant,
   CategoryFactory& catFactory = CategoryFactory::instance();
   QListWidget* list           = ui->nexusCategoryList;
   list->clear();
-  for (auto category : categories) {
+  for (const auto& category : categories) {
     auto catMap = category.toMap();
     QScopedPointer<QListWidgetItem> nexusItem(new QListWidgetItem());
     nexusItem->setData(Qt::DisplayRole, catMap["name"].toString());