---

yaml
---
r: 22675
b: refs/heads/master
c: 9d4aab8
h: refs/heads/master
i:
  22673: 30a1d29
  22671: ca5e86a
v: v3

Author: erickt

[refs]

@@ -1,5 +1,5 @@
 ---
-refs/heads/master: a762c725b523a669159b68d42490668b0a2cc1d6
+refs/heads/master: 9d4aab80a718a84a03c379e98a7a4f812822e347
 refs/heads/snap-stage1: e33de59e47c5076a89eadeb38f4934f58a3618a6
 refs/heads/snap-stage3: cd6f24f9d14ac90d167386a56e7a6ac1f0318195
 refs/heads/try: ffbe0e0e00374358b789b0037bcb3a577cd218be

trunk/src/libcore/vec.rs

@@ -27,7 +27,7 @@ export init;
 export last;
 export last_opt;
 export slice;
-export view;
+export view, mut_view, const_view;
 export split;
 export splitn;
 export rsplit;
@@ -325,6 +325,30 @@ pure fn view<T>(v: &[T], start: uint, end: uint) -> &[T] {
     }
 }
 
+/// Return a slice that points into another slice.
+pure fn mut_view<T>(v: &[mut T], start: uint, end: uint) -> &[mut T] {
+    assert (start <= end);
+    assert (end <= len(v));
+    do unpack_slice(v) |p, _len| {
+        unsafe {
+            ::unsafe::reinterpret_cast(
+                (ptr::offset(p, start), (end - start) * sys::size_of::<T>()))
+        }
+    }
+}
+
+/// Return a slice that points into another slice.
+pure fn const_view<T>(v: &[const T], start: uint, end: uint) -> &[const T] {
+    assert (start <= end);
+    assert (end <= len(v));
+    do unpack_slice(v) |p, _len| {
+        unsafe {
+            ::unsafe::reinterpret_cast(
+                (ptr::offset(p, start), (end - start) * sys::size_of::<T>()))
+        }
+    }
+}
+
 /// Split the vector `v` by applying each element against the predicate `f`.
 fn split<T: copy>(v: &[T], f: fn(T) -> bool) -> ~[~[T]] {
     let ln = len(v);