Consider the definitions: type Cubes<:AbstractArray end sum(cubes::Cubes)=sum(convert(Array,cubes).^3)
Is it possible to make this work? To create a custom array that has indexing and all at inception? Looked up the definition of Array and it is in the commented section on types implemented in C, its constructor is a ccall, if it isn't possible in pure julia would it be possible with C-code that doesn't prompt a rebuild?
