when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. String? password,
    2. @JsonKey.new(name: 'ascii') String? ascii,
    3. String? customTable,
    4. @JsonKey.new(name: 'custom_table') String? legacyCustomTable,
    5. List<String>? customTables,
    6. @JsonKey.new(name: 'custom_tables') List<String>? legacyCustomSets,
    7. int? paddingMin,
    8. @JsonKey.new(name: 'padding_min') int? legacyPaddingMin,
    9. int? paddingMax,
    10. @JsonKey.new(name: 'padding_max') int? legacyPaddingMax,
    )
)

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? password, @JsonKey(name: 'ascii')  String? ascii,  String? customTable, @JsonKey(name: 'custom_table')  String? legacyCustomTable,  List<String>? customTables, @JsonKey(name: 'custom_tables')  List<String>? legacyCustomSets,  int? paddingMin, @JsonKey(name: 'padding_min')  int? legacyPaddingMin,  int? paddingMax, @JsonKey(name: 'padding_max')  int? legacyPaddingMax)  $default,) {final _that = this;
switch (_that) {
case _Sudoku():
return $default(_that.password,_that.ascii,_that.customTable,_that.legacyCustomTable,_that.customTables,_that.legacyCustomSets,_that.paddingMin,_that.legacyPaddingMin,_that.paddingMax,_that.legacyPaddingMax);case _:
  throw StateError('Unexpected subclass');

}
}