Remove CloneableTuple and ImmutableTuple traits

These are adequately covered by the Tuple2 trait.

4 files changed, 5 insertions, 81 deletions

diff --git a/src/libstd/iter.rs b/src/libstd/iter.rs
index d141da68dfd..e5a89fc42e1 100644
--- a/src/libstd/iter.rs
+++ b/src/libstd/iter.rs
@@ -2611,7 +2611,7 @@ mod tests {
         assert_eq!(vi.size_hint(), (10, Some(10)));
 
         assert_eq!(c.take(5).size_hint(), (5, Some(5)));
-        assert_eq!(c.skip(5).size_hint().second(), None);
+        assert_eq!(c.skip(5).size_hint().val1(), None);
         assert_eq!(c.take_while(|_| false).size_hint(), (0, None));
         assert_eq!(c.skip_while(|_| false).size_hint(), (0, None));
         assert_eq!(c.enumerate().size_hint(), (uint::MAX, None));
diff --git a/src/libstd/prelude.rs b/src/libstd/prelude.rs
index ef159d68df7..bd21bb4e754 100644
--- a/src/libstd/prelude.rs
+++ b/src/libstd/prelude.rs
@@ -67,7 +67,6 @@ pub use io::{Buffer, Writer, Reader, Seek};
 pub use str::{Str, StrVector, StrSlice, OwnedStr, IntoMaybeOwned};
 pub use to_bytes::IterBytes;
 pub use to_str::{ToStr, IntoStr};
-pub use tuple::{CloneableTuple, ImmutableTuple};
 pub use tuple::{Tuple1, Tuple2, Tuple3, Tuple4};
 pub use tuple::{Tuple5, Tuple6, Tuple7, Tuple8};
 pub use tuple::{Tuple9, Tuple10, Tuple11, Tuple12};
diff --git a/src/libstd/str.rs b/src/libstd/str.rs
index 023900e5d41..0a7f513581c 100644
--- a/src/libstd/str.rs
+++ b/src/libstd/str.rs
@@ -567,14 +567,14 @@ impl<'a> Iterator<&'a str> for StrSplits<'a> {
 // Helper functions used for Unicode normalization
 fn canonical_sort(comb: &mut [(char, u8)]) {
     use iter::range;
-    use tuple::CloneableTuple;
+    use tuple::Tuple2;
 
     let len = comb.len();
     for i in range(0, len) {
         let mut swapped = false;
         for j in range(1, len-i) {
-            let classA = comb[j-1].second();
-            let classB = comb[j].second();
+            let classA = *comb[j-1].ref1();
+            let classB = *comb[j].ref1();
             if classA != 0 && classB != 0 && classA > classB {
                 comb.swap(j-1, j);
                 swapped = true;
diff --git a/src/libstd/tuple.rs b/src/libstd/tuple.rs
index 91625a53c94..7a81e69f30a 100644
--- a/src/libstd/tuple.rs
+++ b/src/libstd/tuple.rs
@@ -19,66 +19,6 @@ use fmt;
 use result::{Ok, Err};
 use to_str::ToStr;
 
-/// Method extensions to pairs where both types satisfy the `Clone` bound
-pub trait CloneableTuple<T, U> {
-    /// Return the first element of self
-    fn first(&self) -> T;
-    /// Return the second element of self
-    fn second(&self) -> U;
-    /// Return the results of swapping the two elements of self
-    fn swap(&self) -> (U, T);
-}
-
-impl<T:Clone,U:Clone> CloneableTuple<T, U> for (T, U) {
-    /// Return the first element of self
-    #[inline]
-    fn first(&self) -> T {
-        match *self {
-            (ref t, _) => (*t).clone(),
-        }
-    }
-
-    /// Return the second element of self
-    #[inline]
-    fn second(&self) -> U {
-        match *self {
-            (_, ref u) => (*u).clone(),
-        }
-    }
-
-    /// Return the results of swapping the two elements of self
-    #[inline]
-    fn swap(&self) -> (U, T) {
-        match (*self).clone() {
-            (t, u) => (u, t),
-        }
-    }
-}
-
-/// Method extensions for pairs where the types don't necessarily satisfy the
-/// `Clone` bound
-pub trait ImmutableTuple<T, U> {
-    /// Return a reference to the first element of self
-    fn first_ref<'a>(&'a self) -> &'a T;
-    /// Return a reference to the second element of self
-    fn second_ref<'a>(&'a self) -> &'a U;
-}
-
-impl<T, U> ImmutableTuple<T, U> for (T, U) {
-    #[inline]
-    fn first_ref<'a>(&'a self) -> &'a T {
-        match *self {
-            (ref t, _) => t,
-        }
-    }
-    #[inline]
-    fn second_ref<'a>(&'a self) -> &'a U {
-        match *self {
-            (_, ref u) => u,
-        }
-    }
-}
-
 // macro for implementing n-ary tuple functions and operations
 macro_rules! tuple_impls {
     ($(
@@ -340,25 +280,10 @@ mod tests {
     use cmp::*;
 
     #[test]
-    fn test_tuple_ref() {
-        let x = (~"foo", ~"bar");
-        assert_eq!(x.first_ref(), &~"foo");
-        assert_eq!(x.second_ref(), &~"bar");
-    }
-
-    #[test]
-    fn test_tuple() {
-        assert_eq!((948, 4039.48).first(), 948);
-        assert_eq!((34.5, ~"foo").second(), ~"foo");
-        assert_eq!(('a', 2).swap(), (2, 'a'));
-    }
-
-    #[test]
     fn test_clone() {
         let a = (1, ~"2");
         let b = a.clone();
-        assert_eq!(a.first(), b.first());
-        assert_eq!(a.second(), b.second());
+        assert_eq!(a, b);
     }
 
     #[test]