From 2a0dac6f58fb07d5fb6a4dfa94e10ddaa44315a7 Mon Sep 17 00:00:00 2001
From: Kevin Ballard <kevin@sb.org>
Date: Sat, 3 May 2014 23:09:45 -0700
Subject: Handle fallout for vector addition

Adding two vectors now results in a Vec<T> instead of a ~[T].

Implement Add on Vec<T>.
---
 src/libstd/vec.rs | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

(limited to 'src/libstd/vec.rs')

diff --git a/src/libstd/vec.rs b/src/libstd/vec.rs
index d220ebd0d1e..fe122c7873a 100644
--- a/src/libstd/vec.rs
+++ b/src/libstd/vec.rs
@@ -22,7 +22,7 @@ use mem::{size_of, move_val_init};
 use mem;
 use num;
 use num::{CheckedMul, CheckedAdd};
-use ops::Drop;
+use ops::{Add, Drop};
 use option::{None, Option, Some, Expect};
 use ptr::RawPtr;
 use ptr;
@@ -1370,6 +1370,16 @@ impl<T> Vector<T> for Vec<T> {
     }
 }
 
+impl<T: Clone, V: Vector<T>> Add<V, Vec<T>> for Vec<T> {
+    #[inline]
+    fn add(&self, rhs: &V) -> Vec<T> {
+        let mut res = Vec::with_capacity(self.len() + rhs.as_slice().len());
+        res.push_all(self.as_slice());
+        res.push_all(rhs.as_slice());
+        res
+    }
+}
+
 #[unsafe_destructor]
 impl<T> Drop for Vec<T> {
     fn drop(&mut self) {
-- 
cgit 1.4.1-3-g733a5