From b73f18960f5b542bc82bc579bfefff30d3f3f01a Mon Sep 17 00:00:00 2001
From: FreezyLemon <contact@freezylemon.com>
Date: Sun, 10 Nov 2024 23:19:25 +0100
Subject: [PATCH] refactor: Empirical::add: Use `and_modify`

---
 src/distribution/empirical.rs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/distribution/empirical.rs b/src/distribution/empirical.rs
index 0726fb00..a6522fd1 100644
--- a/src/distribution/empirical.rs
+++ b/src/distribution/empirical.rs
@@ -104,7 +104,10 @@ impl Empirical {
         self.var += (sum - 1.) * (data_point - self.mean) * (data_point - self.mean) / sum;
         self.mean += (data_point - self.mean) / sum;
 
-        *self.data.entry(map_key).or_insert(0) += 1;
+        self.data
+            .entry(map_key)
+            .and_modify(|c| *c += 1)
+            .or_insert(1);
     }
 
     pub fn remove(&mut self, data_point: f64) {