Stuff
public text v1 · immutable
bool operator <(Quadruple<t> const &qplIn) const
{
return (tX < qplIn.tX
|| tX == qplIn.tX
&& (tY < qplIn.tY
|| tY == qplIn.tY
&& (tZ < qplIn.tZ
|| tZ == qplIn.tZ
&& tW < qplIn.tW)));
}