---

yaml
---
r: 32148
b: refs/heads/dist-snap
c: 6277046
h: refs/heads/master
v: v3

Author: bblum

[refs]

@@ -7,6 +7,6 @@ refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/heads/ndm: f3868061cd7988080c30d6d5bf352a5a5fe2460b
 refs/heads/try2: d0c6ce338884ee21843f4b40bf6bf18d222ce5df
 refs/heads/incoming: d9317a174e434d4c99fc1a37fd7dc0d2f5328d37
-refs/heads/dist-snap: 4cfb92f4598a6571523bce8b72188df559e2a2b3
+refs/heads/dist-snap: 6277046fa0a5c119885ba33bcb6ac2f4fba0228f
 refs/tags/release-0.2: c870d2dffb391e14efb05aa27898f1f6333a9596
 refs/tags/release-0.3: b5f0d0f648d9a6153664837026ba1be43d3e2503

branches/dist-snap/src/libcore/either.rs

@@ -109,6 +109,22 @@ pure fn is_right<T, U>(eith: &Either<T, U>) -> bool {
     match *eith { Right(_) => true, _ => false }
 }
 
+pure fn unwrap_left<T,U>(+eith: Either<T,U>) -> T {
+    //! Retrieves the value in the left branch. Fails if the either is Right.
+
+    match move eith {
+        Left(move x) => x, Right(_) => fail ~"either::unwrap_left Right"
+    }
+}
+
+pure fn unwrap_right<T,U>(+eith: Either<T,U>) -> U {
+    //! Retrieves the value in the right branch. Fails if the either is Left.
+
+    match move eith {
+        Right(move x) => x, Left(_) => fail ~"either::unwrap_right Left"
+    }
+}
+
 #[test]
 fn test_either_left() {
     let val = Left(10);