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() =>
    'DV-ROUTE-004: ${first.$1} has to be matched before ${first.$2}, and '
    '${second.$1} before ${second.$2}, but each pair sits in a group that '
    'is matched as a whole -- a shell route, or a route with children. '
    'Whichever group goes first hides a route in the other. Move one of '
    'these routes out of its group.';