identifying the component of a vector

[jmlopez...@gmail.com]

Hello,

Given a scalar s doing

  assert( s.v.x.i >= 0);
  vector u = s.v;

I can check  that s belong to a vector u and retrieve the vector but,  how could find which component is ?

Thanks in advance!

Jose

for the moment I will do if(s.i ==u.x.i) ... else if (s.i == u.y.i)  but I wonder  it would be a better procedure....