using System; using System.Collections.Generic; using System.Collections.ObjectModel; using System.Linq; using System.Text; using System.Threading.Tasks; namespace xunit.runner.wpf { public static class Extensions { public static void AddRange(this IList list, IEnumerable items) where TEnumerable : TList { foreach (var i in items) { list.Add(i); } } public static void AddRange(this ObservableCollection list, IEnumerable items) where TEnumerable : TList { foreach (var i in items) { list.Add(i); } } } }