maybeWhen<TResult extends Object?> method

@optionalTypeArgs TResult maybeWhen<TResult extends Object?>({ TResult server(String? message)?, TResult network(String? message)?, TResult unauthorized(String? message)?, TResult timeout(String? message)?, TResult cache(String? message)?, TResult unexpected(String? message)?, 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( String? message)?  server,TResult Function( String? message)?  network,TResult Function( String? message)?  unauthorized,TResult Function( String? message)?  timeout,TResult Function( String? message)?  cache,TResult Function( String? message)?  unexpected,required TResult orElse(),}) {final _that = this;
switch (_that) {
case ServerFailure() when server != null:
return server(_that.message);case NetworkFailure() when network != null:
return network(_that.message);case UnauthorizedFailure() when unauthorized != null:
return unauthorized(_that.message);case TimeoutFailure() when timeout != null:
return timeout(_that.message);case CacheFailure() when cache != null:
return cache(_that.message);case UnexpectedFailure() when unexpected != null:
return unexpected(_that.message);case _:
  return orElse();

}
}