tuple.rs: Document more traits implemented by tuples if their components do

joshtriplett · Oliver Schneider · commit 01fa55988a91 · 2015-06-23T11:18:08.000+02:00
Tuples implement Debug and Hash if their components do.
diff --git a/src/libstd/tuple.rs b/src/libstd/tuple.rs
@@ -25,7 +25,9 @@
 //! * `Eq`
 //! * `PartialOrd`
 //! * `Ord`
+//! * `Debug`
 //! * `Default`
+//! * `Hash`
 //!
 //! # Examples
 //!
