static TResult[] ToArray <TEnumerable, TEnumerator, TSource, TResult>(this TEnumerable source, NullableSelectorAt <TSource, TResult> selector)
where TEnumerable : notnull, IValueReadOnlyCollection <TSource, TEnumerator>
where TEnumerator : struct, IEnumerator <TSource>
{
var array = new TResult[source.Count];
ValueReadOnlyCollectionExtensions.Copy <TEnumerable, TEnumerator, TSource, TResult>(source, array, selector);
return(array);
}
static IMemoryOwner <TResult> ToArray <TEnumerable, TEnumerator, TSource, TResult>(this TEnumerable source, NullableSelectorAt <TSource, TResult> selector, MemoryPool <TResult> pool)
where TEnumerable : notnull, IValueReadOnlyCollection <TSource, TEnumerator>
where TEnumerator : struct, IEnumerator <TSource>
{
Debug.Assert(pool is object);
var result = pool.RentSliced(source.Count);
ValueReadOnlyCollectionExtensions.Copy <TEnumerable, TEnumerator, TSource, TResult>(source, result.Memory.Span, selector);
return(result);
}
public static TSource[] ToArray <TEnumerable, TEnumerator, TSource>(this TEnumerable source)
where TEnumerable : notnull, IValueReadOnlyCollection <TSource, TEnumerator>
where TEnumerator : struct, IEnumerator <TSource>
{
#if NET5_0
var result = GC.AllocateUninitializedArray <TSource>(source.Count);
#else
var result = new TSource[source.Count];
#endif
ValueReadOnlyCollectionExtensions.Copy <TEnumerable, TEnumerator, TSource>(source, result);
return(result);
}
