using System;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Extensions {
  public static class IEnumerableExtensions {

    public static bool IsNullOrEmpty<T>([NotNullWhen(false)] this IEnumerable<T>? list) =>
      list == null || (list != null && !list.Any());
  }
}