// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System.Collections.Generic;
 
namespace System.Linq
{
    public static partial class Enumerable
    {
        private sealed partial class DistinctIterator<TSource>
        {
            public override TSource[] ToArray() => ICollectionToArray(new HashSet<TSource>(_source, _comparer));
 
            public override List<TSource> ToList() => new List<TSource>(new HashSet<TSource>(_source, _comparer));
 
            public override int GetCount(bool onlyIfCheap) => onlyIfCheap ? -1 : new HashSet<TSource>(_source, _comparer).Count;
 
            public override TSource? TryGetFirst(out bool found) => _source.TryGetFirst(out found);
        }
    }
}