static IMemoryOwner <TSource> ToArray <TList, TSource>(this TList source, int offset, int count, MemoryPool <TSource> pool)
where TList : notnull, IReadOnlyList <TSource>
{
Debug.Assert(pool is object);
var result = pool.RentSliced(count);
ReadOnlyListExtensions.Copy <TList, TSource>(source, offset, result.Memory.Span, count);
return(result);
}
static TResult[] ToArray <TList, TSource, TResult>(this TList source, NullableSelector <TSource, TResult> selector, int offset, int count)
where TList : notnull, IReadOnlyList <TSource>
{
#if NET5_0
var result = GC.AllocateUninitializedArray <TResult>(count);
#else
var result = new TResult[count];
#endif
ReadOnlyListExtensions.Copy(source, offset, result, 0, count, selector);
return(result);
}