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+====== Going Native 2013 ======
+Herb Sutter had a couple of favorite C++ few-liners. Watch the video here: [[http://channel9.msdn.com/Events/GoingNative/2013/My-Favorite-Cpp-10-Liner|My Favorite C++ 10-liner]].
+A complete reference-counted object cache.
+From C++98 it uses map operator[]'s auto-insertion.
+From C++11 it uses:
+  * auto
+  * mutex, lock_guard
+  * Thread-safe fn statics
+  * shared_ptr and weak_ptr
+  * Thread-safe.lock()
+<file cpp widget_cache.cpp>
+shared_ptr<widget> get_widget( int id ) {
+    static map< int, weak_ptr<widget> > cache;
+    static mutex m;
+    lock_guard<mutex> hold(m);
+    auto sp = cache[id].lock();    // cache[id] returns a weak_ptr. lock() returns the shared_ptr
+    if( !sp )
+        cache[id] = sp = load_widget(id);
+    return sp;
+}
+</file>
+This one uses the **[[http://libcinder.org/|Cinder C++ Library]]**.
+<file cpp gui_app.cpp>
+#include "cinder/app/AppBasic.h"
+#include "cinder/dx/dx.h"
+#include <vector>
+using namespace ci;
+using namespace ci::app;
+class MyApp:public AppBasic {
+    std::vector< Vec2f > points;
+public:
+    void mouseDrag( MouseEvent e ) {
+        points.push_back( e.getPos() );
+    }
+    void draw() {
+        dx::clear( Color( 0.1f, 0.1f, 0.15f ) );
+        dx::color( 1.0f, 0.5f, 0.25f );
+        dx::begin( GL_LINE_STRIP );
+        for( auto& e: points )
+          dx::vertex( e );
+        dx::end();
+    }
+};
+CINDER_APP_BASIC( MyApp, RendererDx )
+</file>