1 files changed, 29 insertions, 1 deletions
diff --git a/src/libstd/vec_ng.rs b/src/libstd/vec_ng.rs
index 52d3405f8c1..6cc3ccc3452 100644
--- a/src/libstd/vec_ng.rs
+++ b/src/libstd/vec_ng.rs
@@ -15,6 +15,7 @@ use cast::{forget, transmute};
 use clone::Clone;
 use cmp::{Eq, Ordering, TotalEq, TotalOrd};
 use container::Container;
+use default::Default;
 use iter::{DoubleEndedIterator, FromIterator, Iterator};
 use libc::{free, c_void};
 use mem::{size_of, move_val_init};
@@ -26,7 +27,8 @@ use ptr::RawPtr;
 use ptr;
 use rt::global_heap::{malloc_raw, realloc_raw};
 use raw::Slice;
-use vec::{ImmutableVector, Items, MutItems, MutableVector, RevItems};
+use vec::{ImmutableEqVector, ImmutableVector, Items, MutItems, MutableVector};
+use vec::{RevItems};
 
 pub struct Vec<T> {
     priv len: uint,
@@ -340,6 +342,18 @@ impl<T> Vec<T> {
     pub fn slice_from<'a>(&'a self, start: uint) -> &'a [T] {
         self.as_slice().slice_from(start)
     }
+
+    #[inline]
+    pub fn init<'a>(&'a self) -> &'a [T] {
+        self.slice(0, self.len() - 1)
+    }
+}
+
+impl<T:Eq> Vec<T> {
+    /// Return true if a vector contains an element with the given value
+    pub fn contains(&self, x: &T) -> bool {
+        self.as_slice().contains(x)
+    }
 }
 
 #[inline]
@@ -348,6 +362,14 @@ pub fn append<T:Clone>(mut first: Vec<T>, second: &[T]) -> Vec<T> {
     first
 }
 
+/// Appends one element to the vector provided. The vector itself is then
+/// returned for use again.
+#[inline]
+pub fn append_one<T>(mut lhs: Vec<T>, x: T) -> Vec<T> {
+    lhs.push(x);
+    lhs
+}
+
 #[unsafe_destructor]
 impl<T> Drop for Vec<T> {
     fn drop(&mut self) {
@@ -360,6 +382,12 @@ impl<T> Drop for Vec<T> {
     }
 }
 
+impl<T> Default for Vec<T> {
+    fn default() -> Vec<T> {
+        Vec::new()
+    }
+}
+
 pub struct MoveItems<T> {
     priv allocation: *mut c_void, // the block of memory allocated for the vector
     priv iter: Items<'static, T>