Documentation of what does for each type

2 files changed, 3 insertions, 0 deletions

diff --git a/src/libstd/collections/hash/map.rs b/src/libstd/collections/hash/map.rs
index 4eb2c8f0644..48c54c16ed8 100644
--- a/src/libstd/collections/hash/map.rs
+++ b/src/libstd/collections/hash/map.rs
@@ -1218,6 +1218,7 @@ impl<K, V, S> Default for HashMap<K, V, S>
     where K: Eq + Hash,
           S: BuildHasher + Default,
 {
+    /// Creates a `HashMap<K, V, S>`, with initial `Default` hasher.
     fn default() -> HashMap<K, V, S> {
         HashMap::with_hasher(Default::default())
     }
@@ -2026,6 +2027,7 @@ impl Hasher for DefaultHasher {
 
 #[stable(feature = "rust1", since = "1.0.0")]
 impl Default for RandomState {
+    /// Constructs a new `RandomState`.
     #[inline]
     fn default() -> RandomState {
         RandomState::new()
diff --git a/src/libstd/collections/hash/set.rs b/src/libstd/collections/hash/set.rs
index ca5137e9573..b5652bcabf1 100644
--- a/src/libstd/collections/hash/set.rs
+++ b/src/libstd/collections/hash/set.rs
@@ -665,6 +665,7 @@ impl<T, S> Default for HashSet<T, S>
     where T: Eq + Hash,
           S: BuildHasher + Default,
 {
+    /// Creates a `HashSet<T, S>` with initial `Default` hasher.
     fn default() -> HashSet<T, S> {
         HashSet::with_hasher(Default::default())
     }