X-Git-Url: https://git.chrismorgan.info/anymap/blobdiff_plain/6daea5338511debd17890e14082d6b8a4c00a368..3210c8082befc8d7a5a0626e0b06413ac832a56c:/src/lib.rs

diff --git a/src/lib.rs b/src/lib.rs
index 1fae987..0a1a692 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -53,7 +53,7 @@ trait UncheckedAnyRefExt<'a> {
     unsafe fn as_ref_unchecked<T: 'static>(self) -> &'a T;
 }
 
-impl<'a> UncheckedAnyRefExt<'a> for &'a Any {
+impl<'a> UncheckedAnyRefExt<'a> for &'a Any + 'a {
     #[inline]
     unsafe fn as_ref_unchecked<T: 'static>(self) -> &'a T {
         // Get the raw representation of the trait object
@@ -71,7 +71,7 @@ trait UncheckedAnyMutRefExt<'a> {
     unsafe fn as_mut_unchecked<T: 'static>(self) -> &'a mut T;
 }
 
-impl<'a> UncheckedAnyMutRefExt<'a> for &'a mut Any {
+impl<'a> UncheckedAnyMutRefExt<'a> for &'a mut Any + 'a {
     #[inline]
     unsafe fn as_mut_unchecked<T: 'static>(self) -> &'a mut T {
         // Get the raw representation of the trait object
@@ -102,13 +102,13 @@ impl<'a> UncheckedAnyMutRefExt<'a> for &'a mut Any {
 /// assert_eq!(data.find::<Foo>(), None);
 /// data.insert(Foo { str: "foo".to_string() });
 /// assert_eq!(data.find(), Some(&Foo { str: "foo".to_string() }));
-/// data.find_mut::<Foo>().map(|foo| foo.str.push_char('t'));
+/// data.find_mut::<Foo>().map(|foo| foo.str.push('t'));
 /// assert_eq!(data.find::<Foo>().unwrap().str.as_slice(), "foot");
 /// ```
 ///
 /// Values containing non-static references are not permitted.
 pub struct AnyMap {
-    data: HashMap<TypeId, Box<Any>, TypeIdHasher>,
+    data: HashMap<TypeId, Box<Any + 'static>, TypeIdHasher>,
 }
 
 impl AnyMap {
@@ -141,6 +141,11 @@ impl AnyMap {
     pub fn remove<T: 'static>(&mut self) {
         self.data.remove(&TypeId::of::<T>());
     }
+
+    /// Does a value of type `T` exist?
+    pub fn contains<T: 'static>(&self) -> bool {
+        self.data.contains_key(&TypeId::of::<T>())
+    }
 }
 
 impl Collection for AnyMap {