A function that returns a value (or undefined) based on a cell
Implementations: Grids.Array1d.access: For accessing a single-dimension array as a grid Grids.Array2d.access: For accessing a two-dimension array as a grid
Optional
A function that returns a value (or undefined) based on a cell
Implementations: Grids.Array1d.access: For accessing a single-dimension array as a grid Grids.Array2d.access: For accessing a two-dimension array as a grid