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
String toString() {
return "{item_name: '${reVal(itemName)}', qty: ${reVal(qty)}, unique: '${reVal(unique)}', price: ${reVal(price)}, cat1: '${reVal(cat1)}', cat2: '${reVal(cat2)}', cat3: '${reVal(cat3)}'}";
}