---

yaml
---
r: 151742
b: refs/heads/try2
c: 27d8ea0
h: refs/heads/master
v: v3

Author: alexcrichton

[refs]

@@ -5,7 +5,7 @@ refs/heads/snap-stage3: 78a7676898d9f80ab540c6df5d4c9ce35bb50463
 refs/heads/try: 519addf6277dbafccbb4159db4b710c37eaa2ec5
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/heads/ndm: f3868061cd7988080c30d6d5bf352a5a5fe2460b
-refs/heads/try2: f2af4ca3e65ebef040df633c9d563b579540898e
+refs/heads/try2: 27d8ea05a257af534579c5ecef79d45781f3a8f0
 refs/heads/dist-snap: ba4081a5a8573875fed17545846f6f6902c8ba8d
 refs/tags/release-0.2: c870d2dffb391e14efb05aa27898f1f6333a9596
 refs/tags/release-0.3: b5f0d0f648d9a6153664837026ba1be43d3e2503

branches/try2/src/libcore/macros.rs

@@ -59,3 +59,9 @@ macro_rules! assert(
 macro_rules! debug_assert(
     ($($arg:tt)*) => (if cfg!(not(ndebug)) { assert!($($arg)*); })
 )
+
+/// Short circuiting evaluation on Err
+#[macro_export]
+macro_rules! try(
+    ($e:expr) => (match $e { Ok(e) => e, Err(e) => return Err(e) })
+)