[Bro-Dev] "delete" of entire tables/sets

Jim Mellander jmellander at lbl.gov
Tue Dec 18 11:29:17 PST 2018

To satisfy my curiosity and to provide further info for anyone viewing list
archives, I benchmarked assigning a new table() vs. running clear_table()
on tables of various sizes & complexities.  Assigning a new table() was
clearly the winner by a huge margin.

It should be noted that these two methods are not completely equivalent. I
run a script where a current table is periodically moved to an old table,
and the current table cleared for further use.  So, with A & B being tables
of the same type:

B = A;
A = table();

works as intended, as B now contains the prior contents of A, and A is a
new empty table.

B = A;

clears both, as they both point to the same table.

On Thu, Dec 6, 2018 at 4:17 PM Vern Paxson <vern at corelight.com> wrote:

> > I believe the clear_table() function still exists in zeek, as well...
> Hah^2!  Yeah, it does.  Well, glad I consulted the list before diving into
> some hacking :-P.
>                 Vern
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