如何从 Dart 集合中检索随机元素？
var list = ['a','b','c','d','e'];
import "dart:math";
var list = ['a','b','c','d','e'];
// generates a new Random object
final _random = new Random();
// generate a random index based on the list length
// and use it to retrieve the element
var element = list[_random.nextInt(list.length)];
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