Terry Reedy wrote:
Part of my point is that the above is not *code* (and hence not an argument for formatting code that way).
A couple of things about that: 1) Mathematicians often write things informally that, in a program, would need to be spelled out formally in code. They get away with it because they're writing for humans, not computers. 2) Very often they *do* write out the subsequently-defined terms formally. I came across an example just the other day. From "Elementary Numerical Analysis, an Algorithmic Approach" by Samuel D. Conte and Carl de Boor, 3rd edition, page 364: <quote> Runge-Kutta method of order 4: y[n+1] = y[n] + (1/6) * (k1 + 2*k2 + 2*k3 + k4) where k1 = h*f(x[n], y[n]) k2 = h*f(x[n + h/2], y[n] + k1 / 2) k3 = h*f(x[n + h/2], y[n] + k2 / 2) k4 = h*f(x[n], y[n] + k3) </quote> -- Greg