EnumExtensions Example

EnumExtensionsExample.cs

using System;
using System.Linq;

[Flags]
public enum Enemy
{
	None = 0,
	Goblin = 1,
	Wizard = 2,
	Dragon = 4
}

public static class EnumExtensions
{
	// Returns true if the given enum 'e' has *ANY* of the passed options
	public static bool Has(this Enum e, params Enum[] options)
	{
		return options.Any(o => e.HasFlag(o));
	}
	
	// Returns true if the given enum 'e' doesn't have *ANY* of the passed options
	public static bool DoesntHave(this Enum e, params Enum[] options)
	{
		return Has(e, options) == false;
	}
}

public class Program
{
	public static void Main()
	{
		Enemy enemy = Enemy.Dragon;
		
		var result1 = enemy.Has(Enemy.Wizard, Enemy.Dragon); // returns true
		var result2 = enemy.Has(Enemy.Goblin); // returns false
		var result3 = enemy.DoesntHave(Enemy.Goblin); // returns true

		Console.WriteLine(result1 + " " + result2 + " " + result3);
	}
}