whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. TResult? $default(
    1. bool autoPlay,
    2. int autoPlayInterval,
    3. bool showIndicators,
    4. bool showArrows,
    5. int itemsVisible,
    6. double spacing,
    )?
)

A variant of when that fallback to returning null

It is equivalent to doing:

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

Implementation

@optionalTypeArgs TResult? whenOrNull<TResult extends Object?>(TResult? Function(@JsonKey(name: 'auto_play')  bool autoPlay, @JsonKey(name: 'auto_play_interval')  int autoPlayInterval, @JsonKey(name: 'show_indicators')  bool showIndicators, @JsonKey(name: 'show_arrows')  bool showArrows, @JsonKey(name: 'items_visible')  int itemsVisible,  double spacing)?  $default,) {final _that = this;
switch (_that) {
case _CarouselConfig() when $default != null:
return $default(_that.autoPlay,_that.autoPlayInterval,_that.showIndicators,_that.showArrows,_that.itemsVisible,_that.spacing);case _:
  return null;

}
}