C# 索引器的使用
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class Index : MonoBehaviour {
// Use this for initialization
void Start () {
print("访问类实例的结果：");
IndexText array = new IndexText();
array[-5] = -5;
array[0] = 2;
array[1] = 3;
array[2] = 5;
array[11] = 87;
print("array[-5]=" + array[-5]);
print("array[0]="+array[0]);
print("array[1]="+array[1]);
print("array[2]="+array[2]);
print("array[11]="+array[11]);
print("访问类成员的结果：");
WeekIndex we = new WeekIndex();
print(we["星期 3"]);
print(we["星期 5"]);
print(we["星期日"]);
print(we["星期 8"]);
}
public class Clerk
{
//属性的定义
private string name;
public string Name {
get { return name; }
set { name = value; }
}
//索引器声明
private int[] myInt = new int[10];
//public int this[int index]
//{
// get { return myInt[index]; }
// set { myInt[index] = value; }
//}
//public virtual int this[int index]
//{
// get { return myInt[index]; }
// set { myInt[index] = value; }
//}
//public extern int this[int index]
//{
// get;
// set;
//}
}
public abstract class IndexExample {
//抽象索引器必须在抽象类中声明
public abstract int this[int index]
{
get;
set;
}
}
private class IndexText // 用于访问类的实例
{
private int[] array = new int[10];
public int this[int index] {
get {
if (index < 0 || index >= 10) return 0;
else return array[index];
}
set
{
if (index >= 0 && index < 10) array[index] = value;
}
}
}
private class WeekIndex // 用于访问类的成员
{
string[] week = { "星期 1", "星期 2", "星期 3", "星期 4", "星期 5", "星期 6", "星期日" };
private int GetDay( string weekText)
{
int i = 0;
foreach (string str in week) {
if (weekText == str) return i;
i++;
}
return -1;
}
public int this[string week]
{
get { return GetDay(week); }
}
}
}