From 043e7ebb782caab52c6c1b507481de1e8eee6717 Mon Sep 17 00:00:00 2001
From: Andrew MacDonald <andrew@maccas.net>
Date: Wed, 29 Nov 2017 08:38:58 +1100
Subject: [PATCH] Use sum() since it is now part of standard rust

It wasn't available when I was first working on this code, it is now, so
hooray!

Also implemented as sum::<f64> since the type inference doesn't quite
work in this context. Related discussion to this issue can be found on
github here: https://github.com/rust-lang/rust/issues/25094
---
 src/lib.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/lib.rs b/src/lib.rs
index 0f8daaf..4eea178 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -69,7 +69,7 @@ pub fn rmse(obs: &[f64], sim: &[f64]) -> f64 {
 */
 pub fn nse(obs: &[f64], sim: &[f64]) -> f64 {
 
-    let m: f64 = obs.iter().fold(0f64, std::ops::Add::add) / (obs.len() as f64);
+    let m: f64 = obs.iter().sum::<f64>() / (obs.len() as f64);
 
     //int t;
     let mut e1: f64 = 0.0;