From 64170b6fefe90d8c2a922d7927485a91fe807513 Mon Sep 17 00:00:00 2001
From: Jason Volk <jason@zemos.net>
Date: Sat, 19 May 2018 18:52:50 -0700
Subject: [PATCH] ircd::json: Add tuple keys vector_view convenience
 conversion.

---
 include/ircd/json/tuple/keys.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/include/ircd/json/tuple/keys.h b/include/ircd/json/tuple/keys.h
index 473ce2368..bec0e4725 100644
--- a/include/ircd/json/tuple/keys.h
+++ b/include/ircd/json/tuple/keys.h
@@ -34,6 +34,8 @@ struct ircd::json::keys
 
 	size_t count() const;
 
+	operator vector_view<const string_view>() const;
+
 	keys(const selection &);
 	keys();
 };
@@ -153,6 +155,14 @@ ircd::json::keys<tuple>::keys(const selection &selection)
 	selection.transform(this->begin(), this->end());
 }
 
+template<class tuple>
+ircd::json::keys<tuple>::operator
+vector_view<const string_view>()
+const
+{
+	return { this->data(), this->count() };
+}
+
 template<class tuple>
 size_t
 ircd::json::keys<tuple>::count()