From 3ef76ab9e4c484185875da7739b0796cb7b37f6c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fabian=20L=C3=B6schner?= <fabian.loeschner@rwth-aachen.de>
Date: Tue, 13 Aug 2019 09:04:41 +0200
Subject: [PATCH] More elegant initial value for xcmp

---
 src/base/ops.rs | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/src/base/ops.rs b/src/base/ops.rs
index 758c1464..3566a2b5 100644
--- a/src/base/ops.rs
+++ b/src/base/ops.rs
@@ -871,10 +871,7 @@ impl<N: Scalar, R: Dim, C: Dim, S: Storage<N, R, C>> Matrix<N, R, C, S> {
     fn xcmp<N2>(&self, abs: impl Fn(N) -> N2, ordering: Ordering) -> N2
         where N2: Scalar + PartialOrd + Zero {
         let mut iter = self.iter();
-        let mut max = match iter.next() {
-            Some(first) => abs(*first),
-            None => { return N2::zero(); }
-        };
+        let mut max = iter.next().cloned().map_or(N2::zero(), &abs);
 
         for e in iter {
             let ae = abs(*e);