C#-懒汉单例创建

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• 概述
• 直上代码

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概述

懒汉单例的创建模式，需要创建的单例直接继承该类即可。

直上代码

    public abstract class SingletonBase<T>
        where T : class
    {
        /// 

        /// Static instance. Needs to use lambda expression
        /// to construct an instance (since constructor is private).
        /// 
        private static readonly Lazy<T> sInstance = new Lazy<T>(() => CreateInstanceOfT());

        /// 

        /// Gets the instance of this singleton.
        /// 
        public static T Instance
        {
            get { return sInstance.Value; }
        }

        /// 

        /// Creates an instance of T via reflection since T's constructor is expected to be private.
        /// 
        /// T.
        private static T CreateInstanceOfT()
        {
            return Activator.CreateInstance(typeof(T), true) as T;
        }
    }