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();
  buffer.write(name);
  buffer.write(' (');
  for (var i = 0; i < labelNames.length; ++i) {
    if (i > 0) {
      buffer.write(' ');
    }
    buffer.write(labelNames[i]);
    buffer.write('=');
    buffer.write(labelValues[i]);
  }
  buffer.write(') ');
  buffer.write(value);
  if (timestamp != null) {
    buffer.write(' ');
    buffer.write(timestamp);
  }
  return buffer.toString();
}