From 9eb9ad603fe718395bf092e0b599ec78de9f6f44 Mon Sep 17 00:00:00 2001
From: Malte Tammena <malte.tammena@pm.me>
Date: Mon, 7 Jun 2021 17:24:43 +0200
Subject: [PATCH] Add `get_mut` annotations (second try)

---
 nalgebra-sparse/src/cs.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/nalgebra-sparse/src/cs.rs b/nalgebra-sparse/src/cs.rs
index a5a65f33..cde0a3e2 100644
--- a/nalgebra-sparse/src/cs.rs
+++ b/nalgebra-sparse/src/cs.rs
@@ -156,6 +156,7 @@ impl<T> CsMatrix<T> {
     }
 
     #[inline]
+    #[must_use]
     pub fn get_lane_mut(&mut self, index: usize) -> Option<CsLaneMut<T>> {
         let range = self.get_index_range(index)?;
         let minor_dim = self.pattern().minor_dim();
@@ -429,6 +430,7 @@ impl<'a, T> CsLaneMut<'a, T> {
         (self.minor_indices, self.values)
     }
 
+    #[must_use]
     pub fn get_entry_mut(&mut self, global_minor_index: usize) -> Option<SparseEntryMut<T>> {
         get_mut_entry_from_slices(
             self.minor_dim,