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

Tuples implement Debug and Hash if their components do.

diff --git a/src/libstd/tuple.rs b/src/libstd/tuple.rs
index 26c1597f3a01a6ea687988e801e847d63286c80a..08aa979cf631f85c03215b6408eb4436b7591648 100644 (file)
--- a/src/libstd/tuple.rs
+++ b/src/libstd/tuple.rs
@@ -25,7 +25,9 @@
 //! * `Eq`
 //! * `PartialOrd`
 //! * `Ord`
+//! * `Debug`
 //! * `Default`
+//! * `Hash`
 //!
 //! # Examples
 //!