Implement slice::Vector for Option<T> and CVec<T>

1 files changed, 10 insertions, 7 deletions

diff --git a/src/libstd/c_vec.rs b/src/libstd/c_vec.rs
index a7d697c8665..80fe05fcea5 100644
--- a/src/libstd/c_vec.rs
+++ b/src/libstd/c_vec.rs
@@ -43,6 +43,7 @@ use option::{Option, Some, None};
 use ptr::RawPtr;
 use ptr;
 use raw;
+use slice::Vector;
 
 /// The type representing a foreign chunk of memory
 pub struct CVec<T> {
@@ -101,13 +102,6 @@ impl<T> CVec<T> {
         }
     }
 
-    /// View the stored data as a slice.
-    pub fn as_slice<'a>(&'a self) -> &'a [T] {
-        unsafe {
-            mem::transmute(raw::Slice { data: self.base as *const T, len: self.len })
-        }
-    }
-
     /// View the stored data as a mutable slice.
     pub fn as_mut_slice<'a>(&'a mut self) -> &'a mut [T] {
         unsafe {
@@ -151,6 +145,15 @@ impl<T> CVec<T> {
     }
 }
 
+impl<T> Vector<T> for CVec<T> {
+    /// View the stored data as a slice.
+    fn as_slice<'a>(&'a self) -> &'a [T] {
+        unsafe {
+            mem::transmute(raw::Slice { data: self.base as *const T, len: self.len })
+        }
+    }
+}
+
 impl<T> Collection for CVec<T> {
     fn len(&self) -> uint { self.len }
 }