AsSpan< T >() [7/10]

static Span< T > System.MemoryExtensions.AsSpan< T > ( this T?[] array, Index startIndex )

inlinestatic

Definition at line 323 of file MemoryExtensions.cs.

    {
        if (array == null)
        {
            if (!startIndex.Equals(Index.Start))
            {
                ThrowHelper.ThrowArgumentNullException(ExceptionArgument.array);
            }
            return default(Span<T>);
        }
        if (!typeof(T).IsValueType && array.GetType() != typeof(T[]))
        {
            ThrowHelper.ThrowArrayTypeMismatchException();
        }
        int offset = startIndex.GetOffset(array.Length);
        if ((uint)offset > (uint)array.Length)
        {
            ThrowHelper.ThrowArgumentOutOfRangeException();
        }
        return new Span<T>(ref Unsafe.Add(ref MemoryMarshal.GetArrayDataReference(array), (nint)(uint)offset), array.Length - offset);
    }

References System.array, System.Runtime.InteropServices.MemoryMarshal.GetArrayDataReference(), System.offset, System.Index.Start, System.startIndex, System.ThrowHelper.ThrowArgumentNullException(), System.ThrowHelper.ThrowArgumentOutOfRangeException(), and System.ThrowHelper.ThrowArrayTypeMismatchException().