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
class SarimaOrder { final int p,d,q,P,D,Q,s; const SarimaOrder(this.p,this.d,this.q,this.P,this.D,this.Q,this.s); @override String toString()=> 'SARIMA($p,$d,$q)×($P,$D,$Q)_$s';