From 09900003659ee8f1bd078d42bb3bd32c8ee10057 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gustav=20S=C3=B6rn=C3=A4s?= <gustav@sornas.net>
Date: Thu, 21 Jan 2021 09:30:14 +0100
Subject: pop_twice move instead of clone

---
 src/vm.rs | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

(limited to 'src/vm.rs')

diff --git a/src/vm.rs b/src/vm.rs
index 3041628..ebb110c 100644
--- a/src/vm.rs
+++ b/src/vm.rs
@@ -259,9 +259,13 @@ impl VM {
 
     fn pop_twice(&mut self) -> (Value, Value) {
         let len = self.stack.len();
-        let res = (self.stack[len-2].clone(), self.stack[len-1].clone());
-        self.stack.truncate(len - 2);
-        res
+        // stack : { ... valueA valueB valueC }
+        //                      ^^^^^^
+        //               remove len-2
+        // stack : { ... valueA valueC }
+        //                      ^^^^^^
+        //               remove len-2 again
+        (self.stack.remove(len-2), self.stack.remove(len-2))
     }
 
     fn _peek_up(&self, amount: usize) -> Option<&Value> {
-- 
cgit v1.2.1