Mancala (384fd01d7acda41e1611dc2f7f34104660bdfc81) - ui elements def

drawing.js

let stoneUIElement = [];
...

function initDrawingElements(cellCount) 
{
  range(1,cellCount).forEach( _ => stoneUIElement.push(None));
}

function rememberUIObj(boardCell,el) { stoneUIElement[boardCell] = maybe(el); }
function forgetUIObj(boardCell) { stoneUIElement[boardCell] = None; }
function uiObjAt(boardCell) { return stoneUIElement[boardCell]; }