maybeWhen<TResult extends Object?> method

  1. @optionalTypeArgs
TResult maybeWhen<TResult extends Object?>({
  1. TResult knownValue(
    1. KnownInteractionEvent data
    )?,
  2. TResult unknown(
    1. String data
    )?,
  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( KnownInteractionEvent data)?  knownValue,TResult Function( String data)?  unknown,required TResult orElse(),}) {final _that = this;
switch (_that) {
case InteractionEventKnownValue() when knownValue != null:
return knownValue(_that.data);case InteractionEventUnknown() when unknown != null:
return unknown(_that.data);case _:
  return orElse();

}
}