when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. String userId,
    2. String healthId,
    3. String username,
    4. String name,
    5. String firstName,
    6. String lastName,
    7. String nationalID,
    8. String dateOfBirth,
    9. Gender gender,
    10. String avatar,
    11. Contact? primaryContact,
    12. List<Contact> secondaryContacts,
    13. String email,
    14. List<String> languages,
    15. String currentOrganizationID,
    16. String currentProgramID,
    17. bool active,
    18. bool termsAccepted,
    19. bool hasSetPin,
    20. bool hasSetNickname,
    21. bool isPhoneVerified,
    22. bool pinChangeRequired,
    23. bool pinUpdateRequired,
    24. bool suspended,
    25. String streamToken,
    )
)

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(@JsonKey(name: 'id')  String userId, @JsonKey(name: 'healthID')  String healthId, @JsonKey(name: 'username')  String username, @JsonKey(name: 'name')  String name, @JsonKey(name: 'firstName')  String firstName, @JsonKey(name: 'lastName')  String lastName, @JsonKey(name: 'nationalID')  String nationalID, @JsonKey(name: 'dateOfBirth')  String dateOfBirth, @JsonKey(name: 'gender', fromJson: genderFromJson, toJson: genderToJson)  Gender gender, @JsonKey(name: 'avatar')  String avatar, @JsonKey(name: 'contacts')  Contact? primaryContact, @JsonKey(name: 'secondaryContacts')  List<Contact> secondaryContacts, @JsonKey(name: 'email')  String email, @JsonKey(name: 'languages')  List<String> languages, @JsonKey(name: 'currentOrganizationID')  String currentOrganizationID, @JsonKey(name: 'currentProgramID')  String currentProgramID, @JsonKey(name: 'active')  bool active, @JsonKey(name: 'termsAccepted')  bool termsAccepted, @JsonKey(name: 'hasSetPin')  bool hasSetPin, @JsonKey(name: 'hasSetNickname')  bool hasSetNickname, @JsonKey(name: 'isPhoneVerified')  bool isPhoneVerified, @JsonKey(name: 'pinChangeRequired')  bool pinChangeRequired, @JsonKey(name: 'pinUpdateRequired')  bool pinUpdateRequired, @JsonKey(name: 'suspended')  bool suspended,  String streamToken)  $default,) {final _that = this;
switch (_that) {
case _User():
return $default(_that.userId,_that.healthId,_that.username,_that.name,_that.firstName,_that.lastName,_that.nationalID,_that.dateOfBirth,_that.gender,_that.avatar,_that.primaryContact,_that.secondaryContacts,_that.email,_that.languages,_that.currentOrganizationID,_that.currentProgramID,_that.active,_that.termsAccepted,_that.hasSetPin,_that.hasSetNickname,_that.isPhoneVerified,_that.pinChangeRequired,_that.pinUpdateRequired,_that.suspended,_that.streamToken);case _:
  throw StateError('Unexpected subclass');

}
}