# List<E>.filled constructor

List<E>.filled(int length, E fill, { bool growable: false })

Creates a list of the given length with `fill` at each position.

The `length` must be a non-negative integer.

Example:

    new List<int>.filled(3, 0, growable: true); // [0, 0, 0]

The created list is fixed-length if `growable` is false (the default) and growable if `growable` is true. If the list is growable, changing its length will not initialize new entries with `fill`. After being created and filled, the list is no different from any other growable or fixed-length list created using List.

All elements of the returned list share the same `fill` value.

    var shared = new List.filled(3, []);
    shared[0].add(499);
    print(shared);  // => [[499], [499], [499]]

You can use List.generate to create a list with a new object at each position.

    var unique = new List.generate(3, (_) => []);
    unique[0].add(499);
    print(unique); // => [[499], [], []]

## Implementation

    external factory List.filled(int length, E fill, {bool growable = false});