Shard test
include key
include shard
type data
instance shrd : table_shard(key,data)
isolate iso_key = key with impl
isolate iso_key_iter = key.iter with impl
object impl = {
interpret key.t -> bv[16]
}
export shrd.kvt.empty
export shrd.kvt.get_key
export shrd.kvt.get_value
export shrd.kvt.append_pair