maybeMap<TResult extends Object?> method

  1. @optionalTypeArgs
TResult maybeMap<TResult extends Object?>({
  1. TResult getKeys(
    1. HiveGetKeys value
    )?,
  2. TResult getBoxList(
    1. HiveGetBoxs value
    )?,
  3. TResult getValue(
    1. HiveGetValue value
    )?,
  4. required TResult orElse(),
})

A variant of map that fallback to returning orElse.

It is equivalent to doing:

switch (sealedClass) {
  case final Subclass value:
    return ...;
  case _:
    return orElse();
}

Implementation

@optionalTypeArgs
TResult maybeMap<TResult extends Object?>({
  TResult Function(HiveGetKeys value)? getKeys,
  TResult Function(HiveGetBoxs value)? getBoxList,
  TResult Function(HiveGetValue value)? getValue,
  required TResult orElse(),
}) {
  final _that = this;
  switch (_that) {
    case HiveGetKeys() when getKeys != null:
      return getKeys(_that);
    case HiveGetBoxs() when getBoxList != null:
      return getBoxList(_that);
    case HiveGetValue() when getValue != null:
      return getValue(_that);
    case _:
      return orElse();
  }
}