GetSubArray< T >()

static T[] System.Runtime.CompilerServices.RuntimeHelpers.GetSubArray< T > ( T[] array, Range range )

inlinestatic

Definition at line 256 of file RuntimeHelpers.cs.

    {
        if (array == null)
        {
            ThrowHelper.ThrowArgumentNullException(ExceptionArgument.array);
        }
        var (elementOffset, num) = range.GetOffsetAndLength(array.Length);
        T[] array2;
        if (typeof(T).IsValueType || typeof(T[]) == array.GetType())
        {
            if (num == 0)
            {
                return Array.Empty<T>();
            }
            array2 = new T[num];
        }
        else
        {
            array2 = Unsafe.As<T[]>(Array.CreateInstance(array.GetType().GetElementType(), num));
        }
        Buffer.Memmove(ref MemoryMarshal.GetArrayDataReference(array2), ref Unsafe.Add(ref MemoryMarshal.GetArrayDataReference(array), elementOffset), (uint)num);
        return array2;
    }

References System.array, System.Array.CreateInstance(), System.Runtime.Serialization.Dictionary, System.Runtime.InteropServices.MemoryMarshal.GetArrayDataReference(), System.Buffer.Memmove(), and System.ThrowHelper.ThrowArgumentNullException().