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CSharp · Console

/Program.cs

using System;
					
public class Program
{
	public static void Main()
	{
		Console.WriteLine(string.Format(
			"Currently logged in user with token {0}, user is {1} years old",
			UserInfo.Instance.UserToken, (DateTime.Now - UserInfo.Instance.DateOfBirth).Days / 365));
	}
}

public sealed class UserInfo
{
	private static readonly UserInfo _instance;
	private UserInfo() {}
	
	static UserInfo()
	{
		_instance = new UserInfo();
		_instance.DateOfBirth = new DateTime(1986, 3, 20);
		_instance.UserToken = Guid.Parse("c1a62826-b1e9-4bec-9607-9dc1dbbac1d1");
	}
	
	public static UserInfo Instance
	{
		get { return _instance; }
	}
	
	public Guid UserToken {get;set;}
	public DateTime DateOfBirth {get;set;}
}