ReadOnlyTensorSpan<T> Struct

Reference

Definition

Namespace:: System.Numerics.Tensors

Assembly:: System.Numerics.Tensors.dll

Package:: System.Numerics.Tensors v9.0.0-preview.7.24405.7

Source:: ReadOnlyTensorSpan.cs

Important

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ReadOnlyTensorSpan represents a contiguous region of arbitrary memory. Unlike arrays, it can point to either managed or native memory, or to memory allocated on the stack. It is type-safe and memory-safe.

generic <typename T>
public value class ReadOnlyTensorSpan

[System.Diagnostics.CodeAnalysis.Experimental("SYSLIB5001", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
public readonly ref struct ReadOnlyTensorSpan<T>

[<System.Diagnostics.CodeAnalysis.Experimental("SYSLIB5001", UrlFormat="https://aka.ms/dotnet-warnings/{0}")>]
type ReadOnlyTensorSpan<'T> = struct

Public Structure ReadOnlyTensorSpan(Of T)

Type Parameters

T

Inheritance: Object

ValueType
ReadOnlyTensorSpan<T>

Attributes: ExperimentalAttribute

Constructors

ReadOnlyTensorSpan<T>(Array)	Creates a new ReadOnlyTensorSpan<T> over the provided Array. The new ReadOnlyTensorSpan<T> will have a rank of 1 and a length equal to the length of the provided Array.
ReadOnlyTensorSpan<T>(Array, ReadOnlySpan<Int32>, ReadOnlySpan<IntPtr>, ReadOnlySpan<IntPtr>)	Creates a new ReadOnlyTensorSpan<T> over the provided Array using the specified start offsets, lengths, and strides. If the strides are not provided, they will be automatically calculated.
ReadOnlyTensorSpan<T>(Array, ReadOnlySpan<NIndex>, ReadOnlySpan<IntPtr>, ReadOnlySpan<IntPtr>)	Creates a new ReadOnlyTensorSpan<T> over the provided Array using the specified start offsets, lengths, and strides. If the strides are not provided, they will be automatically calculated.
ReadOnlyTensorSpan<T>(ReadOnlySpan<T>)	Creates a new ReadOnlyTensorSpan<T> over the provided ReadOnlySpan<T>. The new ReadOnlyTensorSpan<T> will have a rank of 1 and a length equal to the length of the provided ReadOnlySpan<T>.
ReadOnlyTensorSpan<T>(ReadOnlySpan<T>, ReadOnlySpan<IntPtr>, ReadOnlySpan<IntPtr>)	Creates a new ReadOnlyTensorSpan<T> over the provided Span<T> using the specified lengths and strides. If the strides are not provided, they will be automatically calculated.
ReadOnlyTensorSpan<T>(T*, IntPtr)	Creates a new span over the target unmanaged buffer. Clearly this is quite dangerous the length is not checked. But if this creation is correct, then all subsequent uses are correct.
ReadOnlyTensorSpan<T>(T*, IntPtr, ReadOnlySpan<IntPtr>, ReadOnlySpan<IntPtr>)	Creates a new span over the target unmanaged buffer. Clearly this is quite dangerous, because the length is not checked. But if this creation is correct, then all subsequent uses are correct.
ReadOnlyTensorSpan<T>(T[])	Creates a new span over the entirety of the target array.
ReadOnlyTensorSpan<T>(T[], Index, ReadOnlySpan<IntPtr>, ReadOnlySpan<IntPtr>)	Creates a new span over the portion of the target array beginning at 'start' index and ending at 'end' index (exclusive).
ReadOnlyTensorSpan<T>(T[], Int32, ReadOnlySpan<IntPtr>, ReadOnlySpan<IntPtr>)	Creates a new span over the portion of the target array beginning at 'start' index and ending at 'end' index (exclusive).

Properties

Empty	Returns a 0-length read-only span whose base is the null pointer.
FlattenedLength	The number of items in the span.
IsEmpty	Gets a value indicating whether this TensorSpan<T> is empty.
Item[ReadOnlySpan<IntPtr>]	Returns a reference to specified element of the ReadOnlyTensorSpan.
Item[ReadOnlySpan<NIndex>]	Returns a reference to specified element of the ReadOnlyTensorSpan.
Item[ReadOnlySpan<NRange>]	Returns a slice of the ReadOnlyTensorSpan.
Lengths	Gets the length of each dimension in this TensorSpan<T>.
Rank	Gets the rank, aka the number of dimensions, of this TensorSpan<T>.
Strides	Gets the strides of this TensorSpan<T>

Methods

CastUp<TDerived>(ReadOnlyTensorSpan<TDerived>)	Casts a read-only span of `TDerived` to a read-only span of `T`.
CopyTo(TensorSpan<T>)	Copies the contents of this read-only span into destination span. If the source and destinations overlap, this method behaves as if the original values in a temporary location before the destination is overwritten.
Equals(Object)	Obsolete. This method is not supported as spans cannot be boxed. To compare two spans, use operator==.
FlattenTo(Span<T>)	Flattens the contents of this span into the provided Span<T>.
GetEnumerator()	Gets an enumerator for this span.
GetHashCode()	Obsolete. This method is not supported as spans cannot be boxed.
GetPinnableReference()	Returns a reference to the 0th element of the ReadOnlyTensorSpan. If the ReadOnlyTensorSpan is empty, returns null reference. It can be used for pinning and is required to support the use of span within a fixed statement.
Slice(ReadOnlySpan<NIndex>)	Returns a reference to specified element of the TensorSpan.
Slice(ReadOnlySpan<NRange>)	Forms a slice out of the given span
ToString()	Returns a String with the name of the type and the number of elements.
TryCopyTo(TensorSpan<T>)	Copies the contents of this read-only span into destination span. If the source and destinations overlap, this method behaves as if the original values in a temporary location before the destination is overwritten.
TryFlattenTo(Span<T>)	Flattens the contents of this span into the provided Span<T>.

Operators

Equality(ReadOnlyTensorSpan<T>, ReadOnlyTensorSpan<T>)	Returns true if left and right point at the same memory and have the same length. Note that this does not check to see if the contents are equal.
Implicit(T[] to ReadOnlyTensorSpan<T>)
Inequality(ReadOnlyTensorSpan<T>, ReadOnlyTensorSpan<T>)	Returns false if left and right point at the same memory and have the same length. Note that this does not check to see if the contents are equal.

Extension Methods

BroadcastTo<T>(ReadOnlyTensorSpan<T>, TensorSpan<T>)	Broadcast the data from `source` to `destination`.
Reshape<T>(ReadOnlyTensorSpan<T>, ReadOnlySpan<IntPtr>)	Reshapes the `tensor` tensor to the specified `lengths`. If one of the lengths is -1, it will be calculated automatically. Does not change the length of the underlying memory nor does it allocate new memory. If the new shape is not compatible with the old shape, an exception is thrown.
SequenceEqual<T>(ReadOnlyTensorSpan<T>, ReadOnlyTensorSpan<T>)	Determines whether two sequences are equal by comparing the elements using IEquatable{T}.Equals(T).
Squeeze<T>(ReadOnlyTensorSpan<T>)	Removes all dimensions of length one from the `tensor`.
SqueezeDimension<T>(ReadOnlyTensorSpan<T>, Int32)	Removes axis of length one from the `tensor` for the given `dimension`. If the dimension is not of length one it will throw an exception.
ToString<T>(ReadOnlyTensorSpan<T>, ReadOnlySpan<IntPtr>)	Creates a String representation of the ReadOnlyTensorSpan<T>."/>
TryBroadcastTo<T>(ReadOnlyTensorSpan<T>, TensorSpan<T>)	Broadcast the data from `tensor` to the smallest broadcastable shape compatible with `destination` and stores it in `destination` If the shapes are not compatible, false is returned.
Unsqueeze<T>(ReadOnlyTensorSpan<T>, Int32)	Insert a new dimension of length 1 that will appear at the dimension position.

Applies to

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