toString method Null safety

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 represetion.

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() {
  var variableName = this.variableName;
  return variableName == null
      ? "Reading static variable during its initialization"
      : "Reading static variable '$variableName' during its initialization";