From d0e3c71b91f1a1c1780158789fd42b8ac7209495 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?louiz=E2=80=99?= <louiz@louiz.org>
Date: Sat, 17 Mar 2018 17:28:41 +0100
Subject: Revert "Use if constexpr to make things a lot more readable"

This reverts commit d62ca9f87906be6f046fe9d07afb8bfb69c166e3.
---
 src/database/index.hpp | 21 ++++++++++++---------
 1 file changed, 12 insertions(+), 9 deletions(-)

(limited to 'src/database/index.hpp')

diff --git a/src/database/index.hpp b/src/database/index.hpp
index 094a36a..30766ab 100644
--- a/src/database/index.hpp
+++ b/src/database/index.hpp
@@ -8,16 +8,19 @@
 namespace
 {
 template <std::size_t N=0, typename... T>
-void add_column_name(std::string& out)
+typename std::enable_if<N == sizeof...(T), void>::type
+add_column_name(std::string&)
+{ }
+
+template <std::size_t N=0, typename... T>
+typename std::enable_if<N < sizeof...(T), void>::type
+add_column_name(std::string& out)
 {
-  if constexpr(N < sizeof...(T))
-    {
-      using ColumnType = typename std::remove_reference<decltype(std::get<N>(std::declval<std::tuple<T...>>()))>::type;
-      out += ColumnType::name;
-      if (N != sizeof...(T) - 1)
-        out += ",";
-      add_column_name<N + 1, T...>(out);
-    }
+  using ColumnType = typename std::remove_reference<decltype(std::get<N>(std::declval<std::tuple<T...>>()))>::type;
+  out += ColumnType::name;
+  if (N != sizeof...(T) - 1)
+    out += ",";
+  add_column_name<N+1, T...>(out);
 }
 }
 
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