Johan Mabille

> Correct me if I'm wrong, but we will always get/set variables as representations, right? Not only, for a structured variable, you also get a variable reference that you can...

The first one is implemented in [xcoo_scheme](https://github.com/xtensor-stack/xtensor-sparse/blob/master/include/xtensor-sparse/xcoo_scheme.hpp#L87). We can implement a `coo_builder` for the second one, that will sort its entries at the end of the creation process and return...

I think the queues of subshells should be isolated and never interact (the only exception would be when stopping the kernels, but that's more the control channel interacting with the...

I tend to agree with @Zsailer here. We should not try to "deceive" the user and claim that each client is connected to an independent kernel. The first use case...

Thanks for reporting. This is definitely a bug in xtensor.