toString method Null safety

  1. @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.


String toString() {
  final buff = StringBuffer('$severity $code: $message ');

  if (detail != null) {
    buff.write('Detail: $detail ');

  if (hint != null) {
    buff.write('Hint: $hint ');

  if (tableName != null) {
    buff.write('Table: $tableName ');

  if (columnName != null) {
    buff.write('Column: $columnName ');

  if (constraintName != null) {
    buff.write('Constraint $constraintName ');

  return buff.toString();