Function wrap

Wraps array with two dimensions for grid access. Immutable, such that underlying array is not modified and a call to set returns a new GridArray1d.

// Grid of rows: 2, cols: 3
const myArray = [
 [ `a`, `b`, `c` ],
 [ `d`, `e`, `f` ]
]
let g = wrap(myArray);
g.get({x:1,y:2});          // Get value at cell position
g = g.set(10, {x:1,y:2}); // Set value at cell position
g.array;                  // Get reference to current array
Copy

Use wrapMutable to modify an array in-place