XEts.select_count

You're seeing just the function select_count, go back to XEts module for more information.
Link to this function

select_count(tab, match_spec)

Specs

select_count(t() | tab(), match_spec()) :: non_neg_integer()

Equivalent to select_count(tab, match_spec, :shards_meta.get(tab)).

Link to this function

select_count(tab, match_spec, meta)

Specs

select_count(t() | tab(), match_spec(), meta()) :: non_neg_integer()

Equivalent to :ets.select_count/2.

See also: :ets.select_count/2.