概述

数组是从 system.Array 继承的对象

分类

按照维度划分 #####一维 int []; MyClass []; #####多维 矩形数组

int     [,];
MyClass [,]; **交错数组(jagged array)**

int     [][];
MyClass [][];

其实更准确的叫法应该是“联合一维数组”

public class NewBehaviourScript : MonoBehaviour {
	// 换成 struct 类型试试
	class Player
	{
		public int id = 0;
		public string name = null;
	}
	
	void Start()
	{
		Player[] players = new Player[3];
		// 如果不初始化会出现什么情况
		for (int i=0; i<3; i++)
		{
			players[i] = new Player();
			players[i].id = i;
		}
		
		foreach (Player p in players)
		{
			p.id += 100;
		}
		foreach (Player p in players)
		{
			print(p.id);
		}
	}
}

输出:
100
101
102

Conclusion

当需要修改数组内元素时，foreach 的迭代对象只能是引用类型

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Published