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() {
  return switch (state) {
    Nullability.definitelyNull => 'null',
    Nullability.definitelyNonNull => 'non-null',
    Nullability.maybeNull => 'null?',
    Nullability.bottom => '⊥',
  };
}