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() {
  final buffer = StringBuffer()..write(coefficient.sign > 0.0 ? '+' : '-');

  if (coefficient.abs() != 1.0) {
    buffer
      ..write(coefficient.abs())
      ..write('*');
  }

  buffer.write(variable);

  return buffer.toString();
}