using System.Collections.Generic;

namespace Core
{
    public static class Extensions
    {
        private const float Epsilon = 0.0001f;
        
        public static bool IsNullOrEmpty<T>(this T[] inArray) => 
            inArray == null || inArray.Length == 0;
        
        public static bool IsNullOrEmpty<T>(this IList<T> inList) => 
            inList == null || inList.Count == 0;
        
        public static bool IsNullOrEmpty<T>(this Queue<T> inList) => 
            inList == null || inList.Count == 0;
        
        public static bool AlmostZero(this float inFloat) => inFloat < (Epsilon * Epsilon);

        public static bool IsNull(this object inObject) => ReferenceEquals(inObject, null);

        /*public static IEnumerable<T> GetFlags<T>(this T inputEnum) where T : Enum
        {
            foreach(Enum value in Enum.GetValues(typeof(T)))
                if (inputEnum.HasFlag(value))
                    yield return (T) value;
        }*/

        // public static IEnumerable<T> GetFlags<T>(this T inputEnum) where T : Enum => 
        // Enum.GetValues(typeof(T)).Cast<T>().Where(type => inputEnum.HasFlag(type));
    }
}