save-buffer commented on PR #13364:
URL: https://github.com/apache/arrow/pull/13364#issuecomment-1156530015
> I would hope that having a default-initialized shared_ptr on a class is
nearly costless
Yep I think it's just two pointers (16 bytes) that would be set to 0.
> Garbage collecting types is probably essential for bindings such as Python
and R.
Ok then that does throw a wrench in the data type registry idea.
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