Function lastCellRowwise

Returns the last cell of a grid, row-wise

For uniform grids, this is simply { x: grid.cols - 1, y: grid.rows - 1 }.

For jagged grids, the last position is the last cell of the last row, in this case { x: 0, y: 3 } (position 8).

{ rows: [2, 3, 3, 1] }
0 1
2 3 4
5 6 7
8
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See also firstCellColumnwise