C++ (Qt)
std::vector<Vec3> CPolySDS::CalcVerNormals( const std::vector<Vec3> & pos ) const
{
	std::vector<Vec3> dst(pos.size());
	std::vector<Vec3> faces( mNorIndex.size() / mNumVerPerFace );
 
        // эффективно распараллеливаем здесь
	for (size_t i = 0; i < mNorIndex.size(); i += mNumVerPerFace) {
		faces[ i / mNumVerPerFace ] = GetFaceNormal(&mNorIndex[i], mNumVerPerFace, pos);
	}
 
        // не очень эффективно распараллеливаем здесь
	for (size_t i = 0; i < mNorIndex.size(); i += mNumVerPerFace) {
		for (size_t j = 0; j < mNumVerPerFace; ++j)
			dst[mNorIndex[i + j]] += faces[ i / mNumVerPerFace ];
	}
 
// ну и далее вектор посылается на видеокарту
 

C++ (Qt)
 
class MyWidget : public QWidget
{
public:
    MyWidget ( QWidget * parent, Qt::WindowFlags );
};
 
 

C++ (Qt)
class BaseControlSerializer
{
  BaseControlSerializer( void );
  virtual void Init( QWidget * win, const std::string & txt ... ) = 0;
  ...
  virtual const std::string & SerialName( void ) const;
  ...
  virtual void Read ( Stream & stream ) = 0;
  virtual void Write( Stream & stream ) = 0;
 
  virtual QWidget * widget () = 0;
};
 
template < typename _Widget >
class GenericControlSerializer : public BaseControlSerializer
{
  _Widget * m_widget;
 
private:
  GenericControlSerializer ( void );
  virtual void Init( QWidget * win, const std::string & txt ... ) override;
  ...
  virtual void Read ( Stream & stream ) override;
  virtual void Write( Stream & stream ) override;
 
  virtual QWidget * widget () override { return m_widget; };
};
 
 

C++ (Qt)
ZapretCopyConst& ZapretCopyConst::operator = (const ZapretCopyConst& copySrc)
 

C++ (Qt)
void MyItem::keyPressEvent(QKeyEvent *event)
{
   auto key = event->key();
   if (key == Qt::Key_Up && speed<maxSpeed)
        if (speed < 0)  speed += dec;
        else  speed += acc;
 
    if (key == Qt::Key_Down && speed>-maxSpeed)
        if (speed > 0) speed -= dec;
        else  speed -= acc;
 
    if (key != Qt::Key_Up && key != Qt::Key_Down)
        if (speed - dec > 0) speed -= dec;
        else if (speed + dec < 0) speed += dec;
        else speed = 0;
 
    if (key == Qt::Key_Right && speed!=0)  angle += turnSpeed * speed/maxSpeed;
    if (key == Qt::Key_Left && speed!=0)   angle -= turnSpeed * speed/maxSpeed;
 
    car[0].speed = speed;
    car[0].angle = angle;
}