public static bool AreAnyDuplicates<T>(this IEnumerable<T> list)
{
var hashset = new HashSet<T>();
return list.Any(e => !hashset.Add(e));
}
public static bool AreAnyDuplicates<T>(this IEnumerable<T> list)
{
var hashset = new HashSet<T>();
return list.Any(e => !hashset.Add(e));
}