toString method

@override String toString()

A string representation of this object.

Some classes have a default textual representation, often paired with a static parse function (like int.parse). These classes will provide the textual representation as their string representation.

Other classes have no meaningful textual representation that a program will care about. Such classes will typically override toString to provide useful information when inspecting the object, mainly for debugging or logging.

Implementation

@override
String toString() {
  var string = '';
  string += name.isEmpty ? "" : 'Holder Name = $name\n';
  string += number.isEmpty ? "" : 'Number = $number\n';
  string += expiryDate == null ? "" : 'Expiry Date = $expiryDate\n';
  string += issueDate == null ? "" : 'Issue Date = $issueDate\n';
  string += expiryDate == null ? "" : 'Cnic Holder DoB = $expiryDate\n';
  string += nationality == null ? "" : 'Nationality = $nationality\n';
  string += sex == null ? "" : 'Sex = $sex\n';
  return string;
}