libstd: fix fallout

Author: Jorge Aparicio

src/libstd/collections/hash/map.rs

@@ -852,7 +852,9 @@ impl<K: Eq + Hash<S>, V, S, H: Hasher<S>> HashMap<K, V, H> {
     /// ```
     #[unstable = "matches collection reform specification, waiting for dust to settle"]
     pub fn keys(&self) -> Keys<K, V> {
-        self.iter().map(|(k, _v)| k)
+        fn first<A, B>((a, _): (A, B)) -> A { a }
+
+        self.iter().map(first)
     }
 
     /// An iterator visiting all values in arbitrary order.
@@ -874,7 +876,9 @@ impl<K: Eq + Hash<S>, V, S, H: Hasher<S>> HashMap<K, V, H> {
     /// ```
     #[unstable = "matches collection reform specification, waiting for dust to settle"]
     pub fn values(&self) -> Values<K, V> {
-        self.iter().map(|(_k, v)| v)
+        fn second<A, B>((_, b): (A, B)) -> B { b }
+
+        self.iter().map(second)
     }
 
     /// An iterator visiting all key-value pairs in arbitrary order.
@@ -946,8 +950,10 @@ impl<K: Eq + Hash<S>, V, S, H: Hasher<S>> HashMap<K, V, H> {
     /// ```
     #[unstable = "matches collection reform specification, waiting for dust to settle"]
     pub fn into_iter(self) -> MoveEntries<K, V> {
+        fn last_two<A, B, C>((_, b, c): (A, B, C)) -> (B, C) { (b, c) }
+
         MoveEntries {
-            inner: self.table.into_iter().map(|(_, k, v)| (k, v))
+            inner: self.table.into_iter().map(last_two)
         }
     }
 
@@ -1316,7 +1322,12 @@ pub struct MutEntries<'a, K: 'a, V: 'a> {
 
 /// HashMap move iterator
 pub struct MoveEntries<K, V> {
-    inner: iter::Map<'static, (SafeHash, K, V), (K, V), table::MoveEntries<K, V>>
+    inner: iter::Map<
+        (SafeHash, K, V),
+        (K, V),
+        table::MoveEntries<K, V>,
+        fn((SafeHash, K, V)) -> (K, V),
+    >
 }
 
 /// A view into a single occupied location in a HashMap
@@ -1434,11 +1445,11 @@ impl<'a, K, V> VacantEntry<'a, K, V> {
 
 /// HashMap keys iterator
 pub type Keys<'a, K, V> =
-    iter::Map<'static, (&'a K, &'a V), &'a K, Entries<'a, K, V>>;
+    iter::Map<(&'a K, &'a V), &'a K, Entries<'a, K, V>, fn((&'a K, &'a V)) -> &'a K>;
 
 /// HashMap values iterator
 pub type Values<'a, K, V> =
-    iter::Map<'static, (&'a K, &'a V), &'a V, Entries<'a, K, V>>;
+    iter::Map<(&'a K, &'a V), &'a V, Entries<'a, K, V>, fn((&'a K, &'a V)) -> &'a V>;
 
 impl<K: Eq + Hash<S>, V, S, H: Hasher<S> + Default> FromIterator<(K, V)> for HashMap<K, V, H> {
     fn from_iter<T: Iterator<(K, V)>>(iter: T) -> HashMap<K, V, H> {

src/libstd/collections/hash/set.rs

@@ -277,7 +277,9 @@ impl<T: Eq + Hash<S>, S, H: Hasher<S>> HashSet<T, H> {
     /// ```
     #[unstable = "matches collection reform specification, waiting for dust to settle"]
     pub fn into_iter(self) -> SetMoveItems<T> {
-        self.map.into_iter().map(|(k, _)| k)
+        fn first<A, B>((a, _): (A, B)) -> A { a }
+
+        self.map.into_iter().map(first)
     }
 
     /// Visit the values representing the difference.
@@ -611,11 +613,10 @@ impl<T: Eq + Hash<S>, S, H: Hasher<S> + Default> Default for HashSet<T, H> {
 
 /// HashSet iterator
 pub type SetItems<'a, K> =
-    iter::Map<'static, (&'a K, &'a ()), &'a K, Entries<'a, K, ()>>;
+    iter::Map<(&'a K, &'a ()), &'a K, Entries<'a, K, ()>, fn((&'a K, &'a ())) -> &'a K>;
 
 /// HashSet move iterator
-pub type SetMoveItems<K> =
-    iter::Map<'static, (K, ()), K, MoveEntries<K, ()>>;
+pub type SetMoveItems<K> = iter::Map<(K, ()), K, MoveEntries<K, ()>, fn((K, ())) -> K>;
 
 // `Repeat` is used to feed the filter closure an explicit capture
 // of a reference to the other set

src/libstd/path/posix.rs

@@ -32,8 +32,8 @@ use super::{BytesContainer, GenericPath, GenericPathUnsafe};
 pub type Components<'a> = Splits<'a, u8>;
 
 /// Iterator that yields successive components of a Path as Option<&str>
-pub type StrComponents<'a> = Map<'a, &'a [u8], Option<&'a str>,
-                                       Components<'a>>;
+pub type StrComponents<'a> =
+    Map<&'a [u8], Option<&'a str>, Components<'a>, fn(&[u8]) -> Option<&str>>;
 
 /// Represents a POSIX file path
 #[deriving(Clone)]

src/libstd/path/windows.rs

@@ -38,12 +38,12 @@ use super::{contains_nul, BytesContainer, GenericPath, GenericPathUnsafe};
 ///
 /// Each component is yielded as Option<&str> for compatibility with PosixPath, but
 /// every component in WindowsPath is guaranteed to be Some.
-pub type StrComponents<'a> = Map<'a, &'a str, Option<&'a str>,
-                                       CharSplits<'a, char>>;
+pub type StrComponents<'a> =
+    Map<&'a str, Option<&'a str>, CharSplits<'a, char>, fn(&'a str) -> Option<&'a str>>;
 
 /// Iterator that yields successive components of a Path as &[u8]
-pub type Components<'a> = Map<'a, Option<&'a str>, &'a [u8],
-                                    StrComponents<'a>>;
+pub type Components<'a> =
+    Map<Option<&'a str>, &'a [u8], StrComponents<'a>, fn(Option<&str>) -> &[u8]>;
 
 /// Represents a Windows path
 // Notes for Windows path impl: