core: Trait-ify various overloaded operators

1 files changed, 8 insertions, 2 deletions

diff --git a/src/libstd/bitv.rs b/src/libstd/bitv.rs
index adb7f56ef3b..145ceba4ae5 100644
--- a/src/libstd/bitv.rs
+++ b/src/libstd/bitv.rs
@@ -239,7 +239,7 @@ trait methods {
     fn union(rhs: bitv) -> bool;
     fn intersect(rhs: bitv) -> bool;
     fn assign(rhs: bitv) -> bool;
-    fn get(i: uint) -> bool;
+    pure fn get(i: uint) -> bool;
     fn [](i: uint) -> bool;
     fn eq(rhs: bitv) -> bool;
     fn clear();
@@ -261,7 +261,7 @@ impl of methods for bitv {
     fn union(rhs: bitv) -> bool { union(self, rhs) }
     fn intersect(rhs: bitv) -> bool { intersect(self, rhs) }
     fn assign(rhs: bitv) -> bool { assign(self, rhs) }
-    fn get(i: uint) -> bool { get(self, i) }
+    pure fn get(i: uint) -> bool { get(self, i) }
     fn [](i: uint) -> bool { self.get(i) }
     fn eq(rhs: bitv) -> bool { equal(self, rhs) }
     fn clear() { clear(self) }
@@ -285,6 +285,12 @@ impl of methods for bitv {
     }
 }
 
+impl extensions of ops::index<uint,bool> for bitv {
+    pure fn index(&&i: uint) -> bool {
+        self.get(i)
+    }
+}
+
 impl of to_str::to_str for bitv {
     fn to_str() -> ~str { to_str(self) }
 }