[m-rev.] trivial for review: added set.size

[Simon Taylor]

On 05-Feb-2007, Ondrej Bojar <obo at cuni.cz> wrote:
> The change seems so small that I'm not adding a message to NEWS. Should I?
> 
> Estimated hours taken: 0
> 
> Added size function the the set module and the underlying set_ordlist
> representation.

We already have set.count/1 that does the same thing.

Simon.
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