如何從飛鏢的射程中獲得一個隨機數？

Question

如何得到一個類似於c＃Random.Next（int min，int max）的隨機數;

Answer 1

範圍可以用一個簡單的公式可以找到如下

Random rnd; 
int min = 5; 
int max = 10; 
rnd = new Random(); 
r = min + rnd.next(max - min); 
print("$r is in the range of $min and $max"); 

Answer 2

import 'dart:math'; 

final _random = new Random(); 

/** 
* Generates a positive random integer uniformly distributed on the range 
* from [min], inclusive, to [max], exclusive. 
*/ 
int next(int min, int max) => min + _random.nextInt(max - min);