From dd54d0b2b13ecf1f95e60b107de9af20632335f6 Mon Sep 17 00:00:00 2001
From: Alex Auvolat <alex@adnab.me>
Date: Fri, 6 May 2022 17:14:09 +0200
Subject: Refactor code for apply/revert, implement Update/Apply/RevertLayout

---
 src/util/crdt/lww_map.rs | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'src/util/crdt/lww_map.rs')

diff --git a/src/util/crdt/lww_map.rs b/src/util/crdt/lww_map.rs
index c155c3a8..91d24c7f 100644
--- a/src/util/crdt/lww_map.rs
+++ b/src/util/crdt/lww_map.rs
@@ -140,6 +140,11 @@ where
 		self.vals.clear();
 	}
 
+	/// Retain only values that match a certain predicate
+	pub fn retain(&mut self, pred: impl FnMut(&(K, u64, V)) -> bool) {
+		self.vals.retain(pred);
+	}
+
 	/// Get a reference to the value assigned to a key
 	pub fn get(&self, k: &K) -> Option<&V> {
 		match self.vals.binary_search_by(|(k2, _, _)| k2.cmp(k)) {
-- 
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