Janik Rabe 3b2ad49a7a Update BTreeSet::drain_filter documentation
This commit makes the documentation of `BTreeSet::drain_filter` more
consistent with that of `BTreeMap::drain_filter` after the changes in
f0b8166870bd73a872642f090ae6b88e2bef922a.

In particular, this explicitly documents the iteration order.
2021-07-01 21:56:10 +01:00
..