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Template Class ExpandingArray

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Class Documentation

template<size_t D, typename T = int64_t>
class torch::ExpandingArray

A utility class that accepts either a container of D-many values, or a single value, which is internally repeated D times.

This is useful to represent parameters that are multidimensional, but often equally sized in all dimensions. For example, the kernel size of a 2D convolution has an x and y length, but x and y are often equal. In such a case you could just pass 3 to an ExpandingArray<2> and it would “expand” to {3, 3}.

Public Functions

ExpandingArray(std::initializer_list<T> list)

Constructs an ExpandingArray from an initializer_list.

The extent of the length is checked against the ExpandingArray’s extent parameter D at runtime.

ExpandingArray(std::vector<T> vec)

Constructs an ExpandingArray from an std::vector.

The extent of the length is checked against the ExpandingArray’s extent parameter D at runtime.

ExpandingArray(at::ArrayRef<T> values)

Constructs an ExpandingArray from an at::ArrayRef.

The extent of the length is checked against the ExpandingArray’s extent parameter D at runtime.

ExpandingArray(T single_size)

Constructs an ExpandingArray from a single value, which is repeated D times (where D is the extent parameter of the ExpandingArray).

ExpandingArray(const std::array<T, D> &values)

Constructs an ExpandingArray from a correctly sized std::array.

std::array<T, D> &operator*()

Accesses the underlying std::array.

const std::array<T, D> &operator*() const

Accesses the underlying std::array.

std::array<T, D> *operator->()

Accesses the underlying std::array.

const std::array<T, D> *operator->() const

Accesses the underlying std::array.

operator at::ArrayRef<T>() const

Returns an ArrayRef to the underlying std::array.

size_t size() const noexcept

Returns the extent of the ExpandingArray.

Protected Attributes

std::array<T, D> values_

The backing array.

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