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

Add specialization of `ToString for char` Closes rust-lang#73462
Manishearth · Jun 18, 2020 · 67d5f65 · 67d5f65
2 parents d8f6804 + e5c5df8
commit 67d5f65
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/src/liballoc/string.rs b/src/liballoc/string.rs
@@ -2228,6 +2228,14 @@ 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]