whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. TResult? $default(
    1. String $type,
    2. @ResolutionViewOutcomeConverter() ResolutionViewOutcome outcome,
    3. String? actionTaken,
    4. @ResolutionViewScopeConverter() ResolutionViewScope? scope,
    5. @JsonKey.new(toJson: iso8601) DateTime resolvedAt,
    6. Map<String, dynamic>? $unknown,
    )?
)

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( String $type, @ResolutionViewOutcomeConverter()  ResolutionViewOutcome outcome,  String? actionTaken, @ResolutionViewScopeConverter()  ResolutionViewScope? scope, @JsonKey(toJson: iso8601)  DateTime resolvedAt,  Map<String, dynamic>? $unknown)?  $default,) {final _that = this;
switch (_that) {
case _ResolutionView() when $default != null:
return $default(_that.$type,_that.outcome,_that.actionTaken,_that.scope,_that.resolvedAt,_that.$unknown);case _:
  return null;

}
}