/// <summary>
/// Moves NdArray entity to new immutable NdArray.
/// </summary>
/// <remarks> This method will destroy this NdArray instance. </remarks>
/// <returns></returns>
public NdArray <T> MoveToImmutable()
{
var entity = Entity;
Entity = null !;
return(new NdArray <T>(entity));
}
/// <inheritdoc />
/// <summary>
/// </summary>
/// <param name="source"></param>
/// <param name="slices"> [source.Rank != slices.Length] </param>
public MutableSliceViewNdArrayImpl(MutableNdArrayImpl <T> source, IndexOrRange[] slices)
: base(CalculateShape(source.Shape, slices))
{
Guard.AssertIndices(source.Shape, slices);
_source = source;
_slices = new IndexOrRange[slices.Length];
Array.Copy(slices, _slices, slices.Length);
}
/// <summary>
/// Creates new NdArray object.
/// </summary>
/// <param name="array"></param>
internal MutableNdArray(Array array)
{
var shape = Enumerable
.Range(0, array.Rank)
.Select(array.GetLength)
.ToIndexArray();
var entity = new RawNdArrayImpl <T>(shape);
foreach (var(value, i) in array.Cast <T>().Select((x, i) => (x, i)))
{
entity.Buffer.Span[i] = value;
}
Entity = entity;
}
/// <summary>
/// Creates new NdArray object with values and shapes.
/// </summary>
/// <param name="shape"> [<c>shape.Product() == array.Length</c>] </param>
internal MutableNdArray(IndexArray shape)
{
Entity = new RawNdArrayImpl <T>(shape);
}
/// <summary>
/// Creates new NdArray object with entity object.
/// </summary>
/// <param name="entity"></param>
internal MutableNdArray(MutableNdArrayImpl <T> entity)
{
Entity = entity;
}
internal MutableReshapeViewNdArrayImpl(MutableNdArrayImpl <T> source, IndexArray shape)
: base(shape)
{
_source = source;
}
