Chunk list by sublist

main.dart

void main() {
  final items = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k'];
  final chunkedItems = [];
  final chunkSize = 3;

  for (var i = 0; i < items.length; i += chunkSize) {
    final isLast = i + chunkSize >= items.length;
    final end = isLast ? items.length : i + chunkSize;
    chunkedItems.add(items.sublist(i, end));
  }

  print(chunkedItems); // [[a, b, c], [d, e, f], [g, h, i], [j, k]]
}