---

yaml
---
r: 30357
b: refs/heads/incoming
c: f6d50d8
h: refs/heads/master
i:
  30355: 60509b6
v: v3

Author: pcwalton

[refs]

@@ -6,7 +6,7 @@ refs/heads/try: d324a424d8f84b1eb049b12cf34182bda91b0024
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/heads/ndm: f3868061cd7988080c30d6d5bf352a5a5fe2460b
 refs/heads/try2: d0c6ce338884ee21843f4b40bf6bf18d222ce5df
-refs/heads/incoming: d1554106742fa8c0a99cac1adc5f65aa0ce0ac62
+refs/heads/incoming: f6d50d866a5f067d292875193ae5f30a756e6ad3
 refs/heads/dist-snap: 2f32a1581f522e524009138b33b1c7049ced668d
 refs/tags/release-0.2: c870d2dffb391e14efb05aa27898f1f6333a9596
 refs/tags/release-0.3: b5f0d0f648d9a6153664837026ba1be43d3e2503

branches/incoming/src/libcore/str.rs

@@ -2160,8 +2160,8 @@ trait StrSlice {
     fn split_str(sep: &a/str) -> ~[~str];
     fn starts_with(needle: &a/str) -> bool;
     fn substr(begin: uint, n: uint) -> ~str;
-    fn to_lower() -> ~str;
-    fn to_upper() -> ~str;
+    pure fn to_lower() -> ~str;
+    pure fn to_upper() -> ~str;
     fn escape_default() -> ~str;
     fn escape_unicode() -> ~str;
     pure fn to_unique() -> ~str;
@@ -2262,10 +2262,10 @@ impl &str: StrSlice {
     fn substr(begin: uint, n: uint) -> ~str { substr(self, begin, n) }
     /// Convert a string to lowercase
     #[inline]
-    fn to_lower() -> ~str { to_lower(self) }
+    pure fn to_lower() -> ~str { to_lower(self) }
     /// Convert a string to uppercase
     #[inline]
-    fn to_upper() -> ~str { to_upper(self) }
+    pure fn to_upper() -> ~str { to_upper(self) }
     /// Escape each char in `s` with char::escape_default.
     #[inline]
     fn escape_default() -> ~str { escape_default(self) }