From 940d48ed6021541d5e9576873982f68967d4ec87 Mon Sep 17 00:00:00 2001
From: Lzu Tao <taolzu@gmail.com>
Date: Wed, 16 Oct 2019 16:50:07 +0000
Subject: [PATCH] add example for type_name

---
 src/libcore/any.rs | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/libcore/any.rs b/src/libcore/any.rs
index f75b7a4544384..e2704e807d104 100644
--- a/src/libcore/any.rs
+++ b/src/libcore/any.rs
@@ -445,6 +445,15 @@ impl TypeId {
 ///
 /// The current implementation uses the same infrastructure as compiler
 /// diagnostics and debuginfo, but this is not guaranteed.
+///
+/// # Example
+///
+/// ```rust
+/// assert_eq!(
+///     std::any::type_name::<Option<String>>(),
+///     "core::option::Option<alloc::string::String>",
+/// );
+/// ```
 #[stable(feature = "type_name", since = "1.38.0")]
 #[rustc_const_unstable(feature = "const_type_name")]
 pub const fn type_name<T: ?Sized>() -> &'static str {