lu(L( L(11.0,  9.0, 24.0, 2.0),
      L( 1.0,  5.0,  2.0, 6.0),
      L( 3.0, 17.0, 18.0, 1.0),
      L( 2.0,  5.0,  7.0, 1.0) )).apply2(T(printM,Console.writeln.fpM("-")));

fcn printM(m)  { m.pump(Console.println,rowFmt) }
fcn rowFmt(row){ ("%9.5f "*row.len()).fmt(row.xplode()) }