using System.Collections; namespace salesbook.Shared.Core.Helpers; public static class ObjectExtensions { public static bool IsNullOrEmpty(this IEnumerable? obj) => obj == null || obj.GetEnumerator().MoveNext() == false; public static bool IsNullOrEmpty(this string? obj) => string.IsNullOrEmpty(obj); public static bool EqualsIgnoreCase(this string obj, string anotherString) => string.Equals(obj, anotherString, StringComparison.OrdinalIgnoreCase); public static bool ContainsIgnoreCase(this string obj, string anotherString) => obj.Contains(anotherString, StringComparison.OrdinalIgnoreCase); }