tree ac10bf4fb72cbeae7ca6be3936493e4d3db7e66a
parent a43b248da095e6ad151f8e3f174acf52c2289e40
author Rain <rain@sunshowers.io> 1574043069 -0800
committer Anton Kochkov <xvilka@gmail.com> 1583125591 +0800

[visit] add FilterNode impls for &FixedBitSet and &HashSet

It's sometimes easier to pass in a reference to a bitset or hashset while
using it as a temporary node filter. Previously the only other way to do
this was to use a closure.