From b98d8ad5b01c41efff24faffe94918435194257a Mon Sep 17 00:00:00 2001
From: Andreas Kling <kling@serenityos.org>
Date: Sun, 8 Mar 2020 10:36:11 +0100
Subject: [PATCH] AK: Add a Conditional<condition, TrueType, FalseType>
 template

This allows you to select a type based on a compile-time condition.
---
 AK/StdLibExtras.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/AK/StdLibExtras.h b/AK/StdLibExtras.h
index ff80340bd1a..7dea07a6e11 100644
--- a/AK/StdLibExtras.h
+++ b/AK/StdLibExtras.h
@@ -320,8 +320,19 @@ struct IsSame<T, T> {
     };
 };
 
+template<bool condition, class TrueType, class FalseType>
+struct Conditional {
+    typedef TrueType Type;
+};
+
+template<class TrueType, class FalseType>
+struct Conditional<false, TrueType, FalseType> {
+    typedef FalseType Type;
+};
+
 }
 
+using AK::Conditional;
 using AK::ceil_div;
 using AK::clamp;
 using AK::exchange;