when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. String? base,
    2. String? complete,
    3. String? empty,
    4. String? focus,
    5. String? invalid,
    6. bool? webkitAutofill,
    )
)

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? base,  String? complete,  String? empty,  String? focus,  String? invalid,  bool? webkitAutofill)  $default,) {final _that = this;
switch (_that) {
case _CardElementClasses():
return $default(_that.base,_that.complete,_that.empty,_that.focus,_that.invalid,_that.webkitAutofill);case _:
  throw StateError('Unexpected subclass');

}
}