From 0dfa337ba4d7f530b6be4c4e55de932db603ea63 Mon Sep 17 00:00:00 2001
From: Chris Vest <mr.chrisvest@gmail.com>
Date: Tue, 12 Mar 2019 09:54:48 +0100
Subject: [PATCH] Use a single hashmap lookup to determine if a color has been
 resolved, and to what, instead of two lookups.

---
 src/backend/curses/n.rs | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/backend/curses/n.rs b/src/backend/curses/n.rs
index 525d304..9575c0d 100644
--- a/src/backend/curses/n.rs
+++ b/src/backend/curses/n.rs
@@ -153,12 +153,13 @@ impl Backend {
         let mut pairs = self.pairs.borrow_mut();
 
         // Find if we have this color in stock
-        let (front, back) = find_closest_pair(pair);
-        if pairs.contains_key(&(front, back)) {
+        let result = find_closest_pair(pair);
+        let lookup = pairs.get(&result);
+        if lookup.is_some() {
             // We got it!
-            pairs[&(front, back)]
+            *lookup.unwrap()
         } else {
-            self.insert_color(&mut *pairs, (front, back))
+            self.insert_color(&mut *pairs, result)
         }
     }