From 84b897b91eb8e6c6c9dbd97520849af1f553235d Mon Sep 17 00:00:00 2001
From: arcnmx <arcnmx@users.noreply.github.com>
Date: Mon, 11 Jan 2016 18:36:50 -0500
Subject: [PATCH 1/2] get_or_default

---
 src/lib.rs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/lib.rs b/src/lib.rs
index 1c690ee..29535ae 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -139,6 +139,13 @@ impl<A: UnsafeAnyExt + ?Sized> TypeMap<A> {
         })
     }
 
+    /// Find a value in the map and get a reference to it if it exists, or
+    /// insert a default value first.
+    pub fn get_or_default<K: Key>(&mut self) -> &mut K::Value
+    where K::Value: Any + Implements<A> + Default {
+        self.entry::<K>().or_insert_with(Default::default)
+    }
+
     /// Get the given key's corresponding entry in the map for in-place manipulation.
     pub fn entry<'a, K: Key>(&'a mut self) -> Entry<'a, K, A>
     where K::Value: Any + Implements<A> {

From c68d900b3c151087c98cf7f628dc34efdd3519e4 Mon Sep 17 00:00:00 2001
From: arcnmx <arcnmx@users.noreply.github.com>
Date: Mon, 11 Jan 2016 18:36:59 -0500
Subject: [PATCH 2/2] Expose Implements

---
 src/lib.rs | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/lib.rs b/src/lib.rs
index 29535ae..8e0ee8c 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -11,8 +11,7 @@ use std::marker::PhantomData;
 
 use Entry::{Occupied, Vacant};
 
-pub use internals::{CloneAny, DebugAny};
-use internals::Implements;
+pub use internals::{CloneAny, DebugAny, Implements};
 
 /// A map keyed by types.
 ///