Add str and &str partial equality

Author: varkor

src/libcore/str/mod.rs

@@ -1608,6 +1608,22 @@ mod traits {
         fn ne(&self, other: &str) -> bool { !(*self).eq(other) }
     }
 
+    #[stable(feature = "rust1", since = "1.24.0")]
+    impl<'a> PartialEq<&'a str> for str {
+        #[inline]
+        fn eq(&self, other: &&'a str) -> bool { self == *other }
+        #[inline]
+        fn ne(&self, other: &&'a str) -> bool { self != *other }
+    }
+
+    #[stable(feature = "rust1", since = "1.24.0")]
+    impl<'a> PartialEq<str> for &'a str {
+        #[inline]
+        fn eq(&self, other: &str) -> bool { *self == other }
+        #[inline]
+        fn ne(&self, other: &str) -> bool { *self != other }
+    }
+
     #[stable(feature = "rust1", since = "1.0.0")]
     impl Eq for str {}