maybeWhen<TResult extends Object?> method

  1. @optionalTypeArgs
TResult maybeWhen<TResult extends Object?>({
  1. TResult createResult(
    1. CreateResult data
    )?,
  2. TResult updateResult(
    1. UpdateResult data
    )?,
  3. TResult deleteResult(
    1. DeleteResult data
    )?,
  4. TResult unknown(
    1. Map<String, dynamic> data
    )?,
  5. required TResult orElse(),
})

A variant of when that fallback to an orElse callback.

It is equivalent to doing:

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

Implementation

@optionalTypeArgs TResult maybeWhen<TResult extends Object?>({TResult Function( CreateResult data)?  createResult,TResult Function( UpdateResult data)?  updateResult,TResult Function( DeleteResult data)?  deleteResult,TResult Function( Map<String, dynamic> data)?  unknown,required TResult orElse(),}) {final _that = this;
switch (_that) {
case URepoApplyWritesResultsCreateResult() when createResult != null:
return createResult(_that.data);case URepoApplyWritesResultsUpdateResult() when updateResult != null:
return updateResult(_that.data);case URepoApplyWritesResultsDeleteResult() when deleteResult != null:
return deleteResult(_that.data);case URepoApplyWritesResultsUnknown() when unknown != null:
return unknown(_that.data);case _:
  return orElse();

}
}