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 (isEmpty) return '[]';
final buffer = StringBuffer('[');
_Node<E>? current = _head;
while (current != null) {
buffer.write(current.value);
if (current.next != null) {
buffer.write(', ');
}
current = current.next;
}
buffer.write(']');
return buffer.toString();
}