init(span:shape:strides:)

Declaration

init(span: Span<Element>, shape: [Int], strides: [Int] = [])

Discussion

The lifetime of the resulting view copies the lifetime of the provided span.

Also note that the shape/strides must not be able to produce offsets that go outside of the range of span. As such, negative strides are not supported by this initializer.

Performance note: Making an ndArray view from a normal VM pointer to be used as an input or backing of an InferenceFunction could be a performance anti-pattern if you intend to pass the same underlying memory in repeatedly to many inferences. This can be a function of which compute units the model was specialized for. For example if the inference function runs compute on the GPU or Neural Engine, you may incur a copy of the view into the required memory primitive if it cannot be toll-free converted.

• span: The span to be referenced by the resulting view.

• shape: The shape of the resulting view.

• strides: The strides of the resulting view. If left empty, they will be computed as contiguous row-major.