diff --git a/src/lib.rs b/src/lib.rs
index beb28e4..9cf5728 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -407,6 +407,26 @@ impl<'a, T> Populator<'a, T>
 	    None
 	}
     }
+
+    /// Returns a slice of all the elements
+    ///
+    /// # Panics
+    /// If the collection was not full.
+    #[inline] 
+    pub fn completed_ref(&self) -> &[T]
+    {
+	self.try_completed_ref().expect("Collection was not fully populated")
+    }
+    
+    /// Returns a mutable slice of all the elements
+    ///
+    /// # Panics
+    /// If the collection was not full.
+    #[inline] 
+    pub fn completed_mut(&mut self) -> &[T]
+    {
+	self.try_completed_mut().expect("Collection was not fully populated")
+    }
     
     /// If all values are populated, returns a mutable slice of all the elements.
     ///