mapOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? mapOrNull<TResult extends Object?>(
  1. TResult? $default(
    1. PublicSendModelDefault value
    )?, {
  2. TResult? arr(
    1. PublicSendModelArr value
    )?,
  3. TResult? any(
    1. PublicSendModelAny value
    )?,
})

A variant of map that fallback to returning null.

It is equivalent to doing:

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

Implementation

@optionalTypeArgs
TResult? mapOrNull<TResult extends Object?>(
  TResult? Function(PublicSendModelDefault value)? $default, {
  TResult? Function(PublicSendModelArr value)? arr,
  TResult? Function(PublicSendModelAny value)? any,
}) {
  final _that = this;
  switch (_that) {
    case PublicSendModelDefault() when $default != null:
      return $default(_that);
    case PublicSendModelArr() when arr != null:
      return arr(_that);
    case PublicSendModelAny() when any != null:
      return any(_that);
    case _:
      return null;
  }
}