toString method
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() {
if (_map.isEmpty) {
return "{}";
}
String s = "{";
for (MapEntry<String, dynamic> item in _map.entries) {
s += "${item.key}: ${item.value}, ";
}
return "${s.substring(0, s.length - 2)}}";
}