Dropping nodes happens recursively. Sometimes you don't want to pay for an exhaustive trie traversal when you chop a branch. The client needs a way to postpone this cost. (or skip it if they're using an arena allocator)
It is possible the allocator API already gives us everything we need. But that's unproven. This issue is formally the RFP (Request for Proposal)
Dropping nodes happens recursively. Sometimes you don't want to pay for an exhaustive trie traversal when you chop a branch. The client needs a way to postpone this cost. (or skip it if they're using an arena allocator)
It is possible the allocator API already gives us everything we need. But that's unproven. This issue is formally the RFP (Request for Proposal)