[erlang-questions] which one is more efficiency? ets or pattern match?

Björn Gustavsson <>
Thu Mar 17 13:47:34 CET 2016


On Wed, Mar 16, 2016 at 2:53 PM, Fred Hebert <> wrote:

> Oh oh oh, this is a dangerous thing! You would be switching the purely
> functional semantics of the array module into destructive ones using ETS
> tables! This is what sofs do for sets, and the usage patterns may change
> entirely!

Not sure what you mean with the comment about sofs.

sofs is purely functional and does not use ets.
It has a few functions that convert to and from
digraphs (and the digraph uses ets), but there is
no direct use of ets.

/Björn

P.S. As one of the biggest fans of the sofs module,
I thought I had to defend sofs. :-)

-- 
Björn Gustavsson, Erlang/OTP, Ericsson AB


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