From d7224a6341e9dfed504f85e34d5fff35681ddb2b Mon Sep 17 00:00:00 2001
From: Y0hy0h <Y0hy0h@users.noreply.github.com>
Date: Thu, 1 Aug 2019 10:51:39 +0200
Subject: [PATCH] Improve documentation on implicit_hasher lint

Provide an example of how to fix the lint.
---
 clippy_lints/src/types.rs | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/clippy_lints/src/types.rs b/clippy_lints/src/types.rs
index 1516428d3fd..adc37fdcc97 100644
--- a/clippy_lints/src/types.rs
+++ b/clippy_lints/src/types.rs
@@ -1923,12 +1923,21 @@ fn check_expr(&mut self, cx: &LateContext<'a, 'tcx>, expr: &'tcx Expr) {
     /// **Example:**
     /// ```rust
     /// # use std::collections::HashMap;
-    /// # use std::hash::Hash;
+    /// # use std::hash::{Hash, BuildHasher};
     /// # trait Serialize {};
     /// impl<K: Hash + Eq, V> Serialize for HashMap<K, V> { }
     ///
     /// pub fn foo(map: &mut HashMap<i32, i32>) { }
     /// ```
+    /// could be rewritten as
+    /// ```rust
+    /// # use std::collections::HashMap;
+    /// # use std::hash::Hash;
+    /// # trait Serialize {};
+    /// impl<K: Hash + Eq, V, S: BuildHasher> Serialize for HashMap<K, V, S> { }
+    ///
+    /// pub fn foo<S: BuildHasher>(map: &mut HashMap<i32, i32, S>) { }
+    /// ```
     pub IMPLICIT_HASHER,
     style,
     "missing generalization over different hashers"
-- 
2.44.0