deepCopyMap function

Map<String, dynamic> deepCopyMap(Map<String, dynamic> source)

Deep copy for maps and lists.

deepCopyMap and deepCopyList recurse to the input's nesting depth, so they are not intended for untrusted, arbitrarily-deep structures.

Implementation

Map<String, dynamic> deepCopyMap(Map<String, dynamic> source) {
  final Map<String, dynamic> out = <String, dynamic>{};
  for (final MapEntry<String, dynamic> e in source.entries) {
    final v = e.value;
    if (v is Map<String, dynamic>) {
      out[e.key] = deepCopyMap(v);
    } else if (v is List<dynamic>) {
      out[e.key] = deepCopyList(v);
    } else {
      out[e.key] = v;
    }
  }
  return out;
}