maybeWhen<TResult extends Object?> method

  1. @optionalTypeArgs
TResult maybeWhen<TResult extends Object?>({
  1. TResult listString(
    1. List<String> value
    )?,
  2. TResult string(
    1. String? value
    )?,
  3. 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( List<String> value)?  listString,TResult Function( String? value)?  string,required TResult orElse(),}) {final _that = this;
switch (_that) {
case CompletionStopListString() when listString != null:
return listString(_that.value);case CompletionStopString() when string != null:
return string(_that.value);case _:
  return orElse();

}
}