From 14a2e00b39140935cb0171b4b56e98dbc6ed27d1 Mon Sep 17 00:00:00 2001
From: lisyarus <lisyarus@gmail.com>
Date: Tue, 17 May 2022 18:21:41 +0300
Subject: [PATCH] Add helper callable objects that always return the same
 result

---
 libs/util/include/psemek/util/functional.hpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/libs/util/include/psemek/util/functional.hpp b/libs/util/include/psemek/util/functional.hpp
index dd6fcfd7..daa8bc71 100644
--- a/libs/util/include/psemek/util/functional.hpp
+++ b/libs/util/include/psemek/util/functional.hpp
@@ -7,6 +7,12 @@ namespace psemek::util
 
 	constexpr auto id = [](auto && x) -> decltype(auto) { return x; };
 
+	template <typename T, T value>
+	constexpr auto always = [](auto && ...){ return value; };
+
+	constexpr auto always_true  = always<bool, true>;
+	constexpr auto always_false = always<bool, false>;
+
 	template <typename T>
 	auto constant(T const & x)
 	{