c#单例模式基类

在unity3d中：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public abstract class MonoSingleton<T> : MonoBehaviour
    where T : MonoBehaviour
{
    private static T m_instance;

    public static T Instance
    {
        get
        {
            return m_instance;
        }
    }

    protected virtual void Awake()
    {
        m_instance = this as T;
    }

}

在普通类中：

1. class Singleton<T> where T: class,new()  
2. {  
3.     private static T _instance;  
4.     private static readonly object syslock=new object();  
5.   
6.     public static T getInstance()   
7.     {  
8.         if (_instance == null)  
9.         {  
10.             lock (syslock) {  
11.                 if (_instance == null)  
12.                 {  
13.                     _instance = new T();  
14.                 }  
15.             }  
16.         }  
17.        return _instance;  
18.     }  
19. }