Rollup merge of #73465 - lzutao:spec-char-tostring, r=sfackler

Add specialization of `ToString for char` Closes #73462
rust-lang · Jun 19, 2020 · d2272d4 · d2272d4
2 parents b443a10 + e5c5df8
commit d2272d4
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/src/liballoc/string.rs b/src/liballoc/string.rs
@@ -2230,6 +2230,14 @@ impl<T: fmt::Display + ?Sized> ToString for T {
     }
 }
 
+#[stable(feature = "char_to_string_specialization", since = "1.46.0")]
+impl ToString for char {
+    #[inline]
+    fn to_string(&self) -> String {
+        String::from(self.encode_utf8(&mut [0; 4]))
+    }
+}
+
 #[stable(feature = "str_to_string_specialization", since = "1.9.0")]
 impl ToString for str {
     #[inline]