Utility function for driver authors
join_key_namespace(key, namespace)
| key | A vector of keys |
|---|---|
| namespace | A vector of namespace |
A list with elements n, key and namespace
This exists to join, predictably, keys and namespaces for
operations like mget. Given a vector or scalar for
key and namespace we work out what the required
length is and recycle key and namespace to the
appropriate length.