Julia's Array Wrapping Interface

The following functions make it easier to handle array wrappers, such as Adjoint, which can obscure an underlying array's properties under a layer of indirection.

ArrayInterface.is_forwarding_wrapper — Function

is_forwarding_wrapper(::Type{T}) -> Bool

Returns true if the type T wraps another data type and does not alter any of its standard interface. For example, if T were an array then its size, indices, and elements would all be equivalent to its wrapped data.

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ArrayInterface.buffer — Function

buffer(x)

Return the buffer data that x points to. Unlike parent(x::AbstractArray), buffer(x) may not return another array type.

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ArrayInterface.parent_type — Function

parent_type(::Type{T}) -> Type

Returns the parent array that type T wraps.

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Additional Array Wrapping Libraries

If dealing with array wrappers, additionally consider:

Adapt.jl: conversions for handling device (GPU) wrappers.