Youse Dart DOJO - 2020.06.10 - Classes and Instances

main.dart

import 'package:flutter/material.dart';

void main() {
  // where the magic happens
  Stack stack = Stack(title: "Magic ");
  print(stack._list);
  stack.push(1);
  stack.push(2);
  stack.push(3);
  print(stack._list);
  print(stack.status);
}

class Stack {
  final String title;
  final List<int> _list = [];
  int get sum {
    return _list.fold(0, (prev, element) => prev + element);
  }

  String get status {
    return "$title has ${_list.length} and their sum is $sum 🚀";
  }

  Stack({@required this.title});
  void push(int value) {
    _list.add(value);
  }
}