Abstract Vs Interface - Good read.

Everybody knows what are the points discussed here but still worth reading it as most of the time we forget basics since we are living in a abstract world of coding.

C# - Singleton Class using Lazy <T> in Dotnet .40

Code Snippet,

public sealed class Singleton
{
private static readonly Lazy lazy =
new Lazy(() => new Singleton());

public static Singleton Instance { get { return lazy.Value; } }

private Singleton()
{
}
}

Reference:-http://csharpindepth.com/Articles/General/Singleton.aspx