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44 lines
1.2 KiB
44 lines
1.2 KiB
3 years ago
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namespace ET.Util
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{
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using System;
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/// <summary>
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/// A base class for the singleton design pattern.
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/// https://www.codeproject.com/Articles/572263/A-Reusable-Base-Class-for-the-Singleton-Pattern-in
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/// </summary>
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/// <typeparam name="T">Class type of the singleton</typeparam>
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public abstract class SingletonBase<T> where T : class
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{
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#region Members
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/// <summary>
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/// Static instance. Needs to use lambda expression
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/// to construct an instance (since constructor is private).
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/// </summary>
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private static readonly Lazy<T> sInstance = new Lazy<T>(() => CreateInstanceOfT());
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#endregion
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#region Properties
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/// <summary>
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/// Gets the instance of this singleton.
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/// </summary>
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public static T Instance { get { return sInstance.Value; } }
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#endregion
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#region Methods
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/// <summary>
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/// Creates an instance of T via reflection since T's constructor is expected to be private.
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/// </summary>
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/// <returns></returns>
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private static T CreateInstanceOfT()
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{
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return Activator.CreateInstance(typeof(T)) as T;
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//return new T();
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}
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#endregion
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}
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}
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