Update for removal of collections traits

Author: sfackler

src/lib.rs

@@ -1452,6 +1452,12 @@ pub struct PostgresRow<'stmt> {
 }
 
 impl<'stmt> PostgresRow<'stmt> {
+    /// Returns the number of values in the row
+    #[inline]
+    pub fn len(&self) -> uint {
+        self.data.len()
+    }
+
     /// Retrieves the contents of a field of the row.
     ///
     /// A field can be accessed by the name or index of its column, though
@@ -1493,13 +1499,6 @@ impl<'stmt> PostgresRow<'stmt> {
     }
 }
 
-impl<'stmt> Collection for PostgresRow<'stmt> {
-    #[inline]
-    fn len(&self) -> uint {
-        self.data.len()
-    }
-}
-
 /// A trait implemented by types that can index into columns of a row.
 pub trait RowIndex {
     /// Returns the index of the appropriate column, or `None` if no such