when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. String body,
    2. String bodySummary,
    3. DateTime createdAt,
    4. String handle,
    5. String id,
    6. String title,
    7. DateTime updatedAt,
    8. String onlineStoreUrl,
    )
)

A switch-like method, using callbacks.

As opposed to map, this offers destructuring. It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case Subclass2(:final field2):
    return ...;
}

Implementation

@optionalTypeArgs TResult when<TResult extends Object?>(TResult Function( String body,  String bodySummary,  DateTime createdAt,  String handle,  String id,  String title,  DateTime updatedAt,  String onlineStoreUrl)  $default,) {final _that = this;
switch (_that) {
case _Page():
return $default(_that.body,_that.bodySummary,_that.createdAt,_that.handle,_that.id,_that.title,_that.updatedAt,_that.onlineStoreUrl);case _:
  throw StateError('Unexpected subclass');

}
}