Interesting. You're saying that in the perl implementation, there is a user-defined "slot" that can hold ... what? A ref to another thing, which you choose to be a hash for your property table, it seems. But you called it a user-defined v-table, like it's a table rather than a single slot. Or maybe that's just the inteded use?

Care to tell us more about that? Describing it might help gell your knowledge about XS guts.

—John

In reply to Re: Re: Marking an array as already seen ('~'magic virtual table) by John M. Dlugosz
in thread Marking an array as already seen by John M. Dlugosz

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