How to get a Random Item in a Set in Dart - Step by Step Examples

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How to get a Random Item in a Set in Dart ?

Answer

To retrieve a random item from a set in Dart, you can use the `dart:math` library along with the `random` method.

✐ Examples

1 Get Random Item from Set

In this example,

We import the `dart:math` library to access the `Random` class.
We create a set, for example, a `Set` of integers named `mySet`, and add elements to it.
We initialize a `Random` object to generate random numbers.
We convert the set to a list to utilize the list's index-based access.
We use the `nextInt` method of the `Random` object to generate a random index within the range of the list.
Finally, we retrieve the item at the generated index from the list and print it.

Dart Program

import 'dart:math';

void main() {
  // Create and populate the set
  Set<int> mySet = {1, 2, 3, 4, 5};

  // Initialize random number generator
  Random random = Random();

  // Convert set to list
  List<int> myList = mySet.toList();

  // Get random item from list
  int randomIndex = random.nextInt(myList.length);
  int randomItem = myList[randomIndex];

  // Print random item
  print('Random item from set: $randomItem');
}

Output

Random item from set: [random value]

Summary

In this tutorial, we learned How to get a Random Item in a Set in Dart language with well detailed examples.