From 2d8334358aeda76428ec1f841ec31ab3579325e0 Mon Sep 17 00:00:00 2001
From: varkor <github@varkor.com>
Date: Sat, 6 Jan 2018 22:14:02 +0000
Subject: [PATCH] Use `next` and `next_back`

---
 src/libcore/iter/range.rs | 24 ++++++++----------------
 1 file changed, 8 insertions(+), 16 deletions(-)

diff --git a/src/libcore/iter/range.rs b/src/libcore/iter/range.rs
index 7a38e0cf7cc4..d6c1420a03c2 100644
--- a/src/libcore/iter/range.rs
+++ b/src/libcore/iter/range.rs
@@ -253,10 +253,8 @@ impl<A: Step> Iterator for ops::Range<A> {
     }
 
     #[inline]
-    fn max(self) -> Option<A> {
-        if self.start != self.end {
-            Some(self.end.sub_one())
-        } else { None }
+    fn max(mut self) -> Option<A> {
+        self.next_back()
     }
 }
 
@@ -376,24 +374,18 @@ impl<A: Step> Iterator for ops::RangeInclusive<A> {
     }
 
     #[inline]
-    fn last(self) -> Option<A> {
-        if self.start <= self.end {
-            Some(self.end)
-        } else { None }
+    fn last(mut self) -> Option<A> {
+        self.next_back()
     }
 
     #[inline]
-    fn min(self) -> Option<A> {
-        if self.start <= self.end {
-            Some(self.start)
-        } else { None }
+    fn min(mut self) -> Option<A> {
+        self.next()
     }
 
     #[inline]
-    fn max(self) -> Option<A> {
-        if self.start <= self.end {
-            Some(self.end)
-        } else { None }
+    fn max(mut self) -> Option<A> {
+        self.next_back()
     }
 }