when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. String? id,
    2. String? handle,
    3. String? title,
    4. String? onlineStoreUrl,
    5. Articles? articles,
    )
)

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? id,  String? handle,  String? title,  String? onlineStoreUrl,  Articles? articles)  $default,) {final _that = this;
switch (_that) {
case _Blog():
return $default(_that.id,_that.handle,_that.title,_that.onlineStoreUrl,_that.articles);case _:
  throw StateError('Unexpected subclass');

}
}