when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. String field,
    2. String type,
    3. String value,
    4. String? source,
    5. List<OutboundStructure> nested,
    )
)

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 field,  String type,  String value,  String? source,  List<OutboundStructure> nested)  $default,) {final _that = this;
switch (_that) {
case _OutboundStructure():
return $default(_that.field,_that.type,_that.value,_that.source,_that.nested);case _:
  throw StateError('Unexpected subclass');

}
}