rollup merge of #20215: csouth3/hashmap-rename

Rename struct `Entries` to `Iter` in hash/table.rs and hash/map.rs, to match the naming convention of rust-lang/rfcs#344.

This is a [breaking-change].

map.rs

@@ -896,8 +896,8 @@ 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 iter(&self) -> Entries<K, V> {
-        Entries { inner: self.table.iter() }
+    pub fn iter(&self) -> Iter<K, V> {
+        Iter { inner: self.table.iter() }
     }
 
     /// An iterator visiting all key-value pairs in arbitrary order,
@@ -1313,8 +1313,8 @@ impl<K: Hash<S> + Eq, Sized? Q, V, S, H: Hasher<S>> IndexMut<Q, V> for HashMap<K
 }
 
 /// HashMap iterator
-pub struct Entries<'a, K: 'a, V: 'a> {
-    inner: table::Entries<'a, K, V>
+pub struct Iter<'a, K: 'a, V: 'a> {
+    inner: table::Iter<'a, K, V>
 }
 
 /// HashMap mutable values iterator
@@ -1334,12 +1334,12 @@ pub struct IntoIter<K, V> {
 
 /// HashMap keys iterator
 pub struct Keys<'a, K: 'a, V: 'a> {
-    inner: Map<(&'a K, &'a V), &'a K, Entries<'a, K, V>, fn((&'a K, &'a V)) -> &'a K>
+    inner: Map<(&'a K, &'a V), &'a K, Iter<'a, K, V>, fn((&'a K, &'a V)) -> &'a K>
 }
 
 /// HashMap values iterator
 pub struct Values<'a, K: 'a, V: 'a> {
-    inner: Map<(&'a K, &'a V), &'a V, Entries<'a, K, V>, fn((&'a K, &'a V)) -> &'a V>
+    inner: Map<(&'a K, &'a V), &'a V, Iter<'a, K, V>, fn((&'a K, &'a V)) -> &'a V>
 }
 
 /// HashMap drain iterator
@@ -1381,7 +1381,7 @@ enum VacantEntryState<K, V, M> {
     NoElem(EmptyBucket<K, V, M>),
 }
 
-impl<'a, K, V> Iterator<(&'a K, &'a V)> for Entries<'a, K, V> {
+impl<'a, K, V> Iterator<(&'a K, &'a V)> for Iter<'a, K, V> {
     #[inline] fn next(&mut self) -> Option<(&'a K, &'a V)> { self.inner.next() }
     #[inline] fn size_hint(&self) -> (uint, Option<uint>) { self.inner.size_hint() }
 }

table.rs

@@ -657,8 +657,8 @@ impl<K, V> RawTable<K, V> {
         }
     }
 
-    pub fn iter(&self) -> Entries<K, V> {
-        Entries {
+    pub fn iter(&self) -> Iter<K, V> {
+        Iter {
             iter: self.raw_buckets(),
             elems_left: self.size(),
         }
@@ -770,7 +770,7 @@ impl<'a, K, V> Iterator<(K, V)> for RevMoveBuckets<'a, K, V> {
 }
 
 /// Iterator over shared references to entries in a table.
-pub struct Entries<'a, K: 'a, V: 'a> {
+pub struct Iter<'a, K: 'a, V: 'a> {
     iter: RawBuckets<'a, K, V>,
     elems_left: uint,
 }
@@ -793,7 +793,7 @@ pub struct Drain<'a, K: 'a, V: 'a> {
     iter: RawBuckets<'static, K, V>,
 }
 
-impl<'a, K, V> Iterator<(&'a K, &'a V)> for Entries<'a, K, V> {
+impl<'a, K, V> Iterator<(&'a K, &'a V)> for Iter<'a, K, V> {
     fn next(&mut self) -> Option<(&'a K, &'a V)> {
         self.iter.next().map(|bucket| {
             self.elems_left -= 1;