SharpMath.Vector4D.this C# (CSharp) Méthode

        public float this[int _Index]
        {
            get { return _Index == 0 ? x : (_Index == 1 ? y : (_Index == 2 ? z : (_Index == 3 ? w : float.NaN))); }
            set
            {
                if ( _Index == 0 )
                    x = value;
                else if ( _Index == 1 )
                    y = value;
                else if ( _Index == 2 )
                    z = value;
                else if ( _Index == 3 )
                    w = value;
            }
        }