gistfile1.nim

const WIDTH = 640
const HEIGHT = 327
 
type
  TField = tuple
    a: float
    b: float
    c: float
    d: float
    e: float
  TRow = array[0..WIDTH - 1, TField]
  TGrid = array[0..HEIGHT -1, TRow]
  TWorld = tuple
    grid: TGrid
 
proc display(world: TWorld) =
  for r in 0..high(world.grid):
    for c in 0..high(world.grid[r]):
      echo("init " & $(r) & " " & $(c))
 
var w: TWorld
 
w.display()