clear(predicate)

Clears all cells that match a given condition, setting their values to null.

Example

(move the mouse to clear all 🐉 from the current column; click to reset)

code

Quadrille.cellLength = 40;
let quadrille;

function setup() {
  createCanvas(400, 400);
  reset();
}

function draw() {
  background('SkyBlue');
  drawQuadrille(quadrille);
}

function mouseMoved() {
  const col = quadrille.mouseCol;
  quadrille.clear(({ col: c, value }) => c === col && value === '🐉');
}

function mouseClicked() {
  reset();
}

function reset() {
  quadrille = createQuadrille(10, 10, 20, '🐉').rand(20, '🐹').rand(20, '🐭');
}

Syntax

clear(predicate)

Parameters

Param	Description
`predicate`	Function: condition that determines which cells to clear. Receives `{ row, col, value }` as input¹

The value field may be of any type, including functions or objects. ↩︎

clear()clear(row, col