1 files changed, 27 insertions, 0 deletions
diff --git a/src/libstd/vec_ng.rs b/src/libstd/vec_ng.rs
index 6cc3ccc3452..9b6acdd9b9e 100644
--- a/src/libstd/vec_ng.rs
+++ b/src/libstd/vec_ng.rs
@@ -16,6 +16,7 @@ use clone::Clone;
 use cmp::{Eq, Ordering, TotalEq, TotalOrd};
 use container::Container;
 use default::Default;
+use fmt;
 use iter::{DoubleEndedIterator, FromIterator, Iterator};
 use libc::{free, c_void};
 use mem::{size_of, move_val_init};
@@ -82,6 +83,26 @@ impl<T: Clone> Vec<T> {
             self.push((*element).clone())
         }
     }
+
+
+    pub fn grow(&mut self, n: uint, initval: &T) {
+        let new_len = self.len() + n;
+        self.reserve(new_len);
+        let mut i: uint = 0u;
+
+        while i < n {
+            self.push((*initval).clone());
+            i += 1u;
+        }
+    }
+
+    pub fn grow_set(&mut self, index: uint, initval: &T, val: T) {
+        let l = self.len();
+        if index >= l {
+            self.grow(index - l + 1u, initval);
+        }
+        *self.get_mut(index) = val;
+    }
 }
 
 impl<T:Clone> Clone for Vec<T> {
@@ -388,6 +409,12 @@ impl<T> Default for Vec<T> {
     }
 }
 
+impl<T:fmt::Show> fmt::Show for Vec<T> {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        self.as_slice().fmt(f)
+    }
+}
+
 pub struct MoveItems<T> {
     priv allocation: *mut c_void, // the block of memory allocated for the vector
     priv iter: Items<'static, T>