From abb693d4efc6948e3383cb81c5a467fc3b7390a4 Mon Sep 17 00:00:00 2001
From: Anton Bachin <antonbachin@yahoo.com>
Date: Mon, 19 Oct 2020 08:26:14 +0300
Subject: [PATCH] Document BETTER_ENUMS_DECLARE_STD_HASH

Follow-on to #77.

[skip ci]
---
 doc/ApiReference.md | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/doc/ApiReference.md b/doc/ApiReference.md
index 40b97a6..74394e3 100644
--- a/doc/ApiReference.md
+++ b/doc/ApiReference.md
@@ -413,6 +413,21 @@ as [`_from_string`](#_from_string). In case of failure, sets the stream's
 
 
 
+### Hashing
+
+#### macro <em>BETTER_ENUMS_DECLARE_STD_HASH</em>(Enum)
+
+Use this outside namespace scope to declare a specialization of `std::hash` for
+the type `Enum`. For example:
+
+    // This declaration might be inside a namespace.
+    <em>BETTER_ENUM</em>(<em>Channel</em>, int, Red, Green, Blue)
+
+    // Later, outside the namespace:
+    <em>BETTER_ENUMS_DECLARE_STD_HASH</em>(<em>Channel</em>)
+
+
+
 %% class = api
 
 %% description = Detailed description of the Better Enums API.