remove method

  1. @override
MariaDbColumn remove(
  1. Object? key
)
override

Removes key and its associated value, if present, from the map.

Returns the value associated with key before it was removed. Returns null if key was not in the map.

Note that some maps allow null as a value, so a returned null value doesn't always mean that the key was absent.

final terrestrial = <int, String>{1: 'Mercury', 2: 'Venus', 3: 'Earth'};
final removedValue = terrestrial.remove(2); // Venus
print(terrestrial); // {1: Mercury, 3: Earth}

Implementation

@override
MariaDbColumn remove(Object? key) {
  final idx = _getIndexFromKey(key);
  if (null == idx) {
    throw Exception(
      "This mariadb table `$name` has no column "
      "with the name `$key`",
    );
  }

  final col = _columns.removeAt(idx);
  col._onRowsChanged = null;
  return col;
}