commit c86633d53c1150048cbcb2605403ffb227c853b4
author David Tolnay <dtolnay@gmail.com> Sat Oct 03 23:48:06 2020 -0700
committer David Tolnay <dtolnay@gmail.com> Sat Oct 03 23:48:58 2020 -0700
tree a35e8a648ea2f213e4701550025af8928806ff63
parent 762f0419749520a363c5c266923529d507d9f8b3

Generalize OrderedSet::contains method

syntax/set.rs

diff --git a/syntax/set.rs b/syntax/set.rs
index b553169..891df60 100644
--- a/syntax/set.rs
+++ b/syntax/set.rs
@@ -1,3 +1,4 @@
+use std::borrow::Borrow;
 use std::collections::HashSet;
 use std::fmt::{self, Debug};
 use std::hash::Hash;
@@ -27,7 +28,11 @@
         new
     }
 
-    pub fn contains(&self, value: &T) -> bool {
+    pub fn contains<Q>(&self, value: &Q) -> bool
+    where
+        &'a T: Borrow<Q>,
+        Q: ?Sized + Hash + Eq,
+    {
         self.set.contains(value)
     }
 }