Relax Sized bounds of sample_iter functions

rust-random · Feb 6, 2019 · e07f8ec · e07f8ec
1 parent 4ca5ee3
commit e07f8ec
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Showing 2 changed files with 5 additions and 4 deletions.
diff --git a/src/distributions/mod.rs b/src/distributions/mod.rs
@@ -259,7 +259,7 @@ pub trait Distribution<T> {
     /// }
     /// ```
     fn sample_iter<'a, R>(&'a self, rng: &'a mut R) -> DistIter<'a, Self, R, T>
-        where Self: Sized, R: Rng
+        where R: Rng + ?Sized
     {
         DistIter {
             distr: self,
@@ -284,7 +284,7 @@ impl<'a, T, D: Distribution<T>> Distribution<T> for &'a D {
 ///
 /// [`sample_iter`]: Distribution::sample_iter
 #[derive(Debug)]
-pub struct DistIter<'a, D: 'a, R: 'a, T> {
+pub struct DistIter<'a, D: 'a + ?Sized, R: 'a + ?Sized, T> {
     distr: &'a D,
     rng: &'a mut R,
     phantom: ::core::marker::PhantomData<T>,

diff --git a/src/lib.rs b/src/lib.rs
@@ -290,8 +290,9 @@ pub trait Rng: RngCore {
     ///     println!("Not a 6; rolling again!");
     /// }
     /// ```
-    fn sample_iter<'a, T, D: Distribution<T>>(&'a mut self, distr: &'a D)
-        -> distributions::DistIter<'a, D, Self, T> where Self: Sized
+    fn sample_iter<'a, T, D>(&'a mut self, distr: &'a D)
+        -> distributions::DistIter<'a, D, Self, T>
+        where D: Distribution<T> + ?Sized
     {
         distr.sample_iter(self)
     }