Programming in Dart: Control Flow & Collections

May 3 2022 · Dart 2.15, DartPad, DartPad

Part 2: More Collections

16. Work with Sets

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Previous episode: 15. Create Sets Next episode: 17. Challenge: Play with Sets

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In the previous episode, you were introduced to the set. You saw that sets have no order and remove duplicates. But I didn’t go into the real power behind behind sets. And that’s comparing sets to other other sets.

var electricCars = { 'Tesla', 'Ford', 'BMW', 'Rivian' };
var gasCars = { 'Ford', 'Ram', 'BMW'};
var allCars = gasCars.union(electricCars);
var justGasCars = gasCars.difference(electricCars);
var makesGasAndElectricCars = gasCars.intersection(electricCars);