toString method
override
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
String toString() { String? name = this.name; String nameString = (name == null) ? "" : " ($name)"; Object? message = this.message; var messageString = (message == null) ? "" : ": ${message}"; String prefix = "$_errorName$nameString$messageString"; if (!_hasValue) return prefix; // If we know the invalid value, we can try to describe the problem. String explanation = _errorExplanation; String errorValue = Error.safeToString(invalidValue); return "$prefix$explanation: $errorValue"; }