replace for_each with range loops

No advantage over the latter, which is simpler.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

src/core/download_factory.cc

@@ -286,9 +286,8 @@ DownloadFactory::receive_success() {
     if (torrent::log_groups[torrent::LOG_TORRENT_DEBUG].valid())
       log_created(download, rtorrent);
 
-    std::for_each(m_commands.begin(), m_commands.end(), [&download](const std::string& cmd) {
-        rpc::parse_command_multiple_std(cmd, rpc::make_target(download));
-      });
+    for (const auto& command : m_commands)
+      rpc::parse_command_multiple_std(command, rpc::make_target(download));
 
     if (m_manager->download_list()->find(infohash) == m_manager->download_list()->end())
       throw torrent::input_error("The newly created download was removed.");

src/core/download_list.cc

@@ -167,8 +167,10 @@ DownloadList::insert(Download* download) {
 
     // This needs to be separated into two different calls to ensure
     // the download remains in the view.
-    std::for_each(control->view_manager()->begin(), control->view_manager()->end(), [&download](View* v) { v->insert(download); });
-    std::for_each(control->view_manager()->begin(), control->view_manager()->end(), [&download](View* v) { v->filter_download(download); });
+    for (auto v : *control->view_manager())
+      v->insert(download);
+    for (auto v : *control->view_manager())
+      v->filter_download(download);
 
     DL_TRIGGER_EVENT(*itr, "event.download.inserted");
 
@@ -201,7 +203,8 @@ DownloadList::erase(iterator itr) {
   control->core()->download_store()->remove(*itr);
 
   DL_TRIGGER_EVENT(*itr, "event.download.erased");
-  std::for_each(control->view_manager()->begin(), control->view_manager()->end(), [itr](View* v) { v->erase(*itr); });
+  for (auto v : *control->view_manager())
+    v->erase(*itr);
 
   torrent::download_remove(*(*itr)->download());
   delete *itr;

src/core/manager.cc

@@ -142,9 +142,11 @@ Manager::cleanup() {
 void
 Manager::shutdown(bool force) {
   if (!force)
-    std::for_each(m_download_list->begin(), m_download_list->end(), [this](Download* d) { m_download_list->pause_default(d); });
+    for (auto d : *m_download_list)
+      m_download_list->pause_default(d);
   else
-    std::for_each(m_download_list->begin(), m_download_list->end(), [this](Download* d) { m_download_list->close_quick(d); });
+    for (auto d : *m_download_list)
+      m_download_list->close_quick(d);
 }
 
 void

src/core/view_manager.cc

@@ -18,7 +18,8 @@ namespace core {
 
 void
 ViewManager::clear() {
-  std::for_each(begin(), end(), [](View* v) { delete v; });
+  for (auto v : *this)
+    delete v;
 
   base_type::clear();
 }